Multiple USB Devices on ASUS

[LindaM]

Hi All,



I am having an odd problem and don't know if it can be resolved. I

recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

processor, and a 350W PSU, running Windows XP SP3r.



The problem:



I set up the following USB devices on the New PC exactly as I had on

the old PC:



1) USB Wireless Mouse

2) Logitech PC Camera

3) HP Laserjet P2015 Printer

4) HO Officejet 6310 AIO Printer



In addition I have now added:



5) 500GB Seagate External Hard Drive



I set up the Laserjet first and made that my default printer. Then I

set up the Officejet All-In-One printer. The first thing I noticed is

the printer made itself the default printer. I literally watched it

change. Then when I tried to print to either printer neither would

print. If I unplug the device and plug it back in I get the message

"windows doesn't recognize the device" and then ANYTHING I plug into

the USB port is not recognized. And some of my other devices are no

longer recognized.



I finally uninstalled the Officejet and shut down the PC. I actually

unplugged the PC from the power supply and then all my devices were

seen and seemed to be ok. I just cannot add the 2nd printer.



I spoke to an HP rep who insisted that I would never be able to have 2

USB printers hooked up because the new motherboards USB ports use

power differently and therefore I would not be able to have 2 USB

printers hooked up (Mind you both of these printers are USB - no lpt

ports). I find this incredibly hard to believe since the new

motherboards don't even have LPT ports available and EVERYTHING seems

to be going to the USB. What good is having USB devices if you can't

have them all plugged in?



Tell me this guy didn't know what he was talking about and how I can

resolve this issue. And if you're wondering why I have 2 printers, 1

is for black & white fast printing (I run a lot of long jobs here) and

the other is an all-in-one that I can print color, or scan from.



Things I have tried:



I swapped power supplies - same problem

I took the mobo out and put it on a cardboard box to see if there was

a grounding problem - same problem

I ran a Windows Repair - same problem



The only thing that seems to correct, at least while my 4 devices (not

my 2nd printer) the USB not being recognized is shutting down the PC

and unplugging it from the power supply then plugging it back in and

powering back up.



Anyone run into this? If so, has anyone come up with a solution?



Thanks



Linda

 

[LindaM]

Hi All,



I am having an odd problem and don't know if it can be resolved. I

recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

processor, and a 350W PSU, running Windows XP SP3r.



The problem:



I set up the following USB devices on the New PC exactly as I had on

the old PC:



1) USB Wireless Mouse

2) Logitech PC Camera

3) HP Laserjet P2015 Printer

4) HO Officejet 6310 AIO Printer



In addition I have now added:



5) 500GB Seagate External Hard Drive



I set up the Laserjet first and made that my default printer. Then I

set up the Officejet All-In-One printer. The first thing I noticed is

the printer made itself the default printer. I literally watched it

change. Then when I tried to print to either printer neither would

print. If I unplug the device and plug it back in I get the message

"windows doesn't recognize the device" and then ANYTHING I plug into

the USB port is not recognized. And some of my other devices are no

longer recognized.



I finally uninstalled the Officejet and shut down the PC. I actually

unplugged the PC from the power supply and then all my devices were

seen and seemed to be ok. I just cannot add the 2nd printer.



I spoke to an HP rep who insisted that I would never be able to have 2

USB printers hooked up because the new motherboards USB ports use

power differently and therefore I would not be able to have 2 USB

printers hooked up (Mind you both of these printers are USB - no lpt

ports). I find this incredibly hard to believe since the new

motherboards don't even have LPT ports available and EVERYTHING seems

to be going to the USB. What good is having USB devices if you can't

have them all plugged in?



Tell me this guy didn't know what he was talking about and how I can

resolve this issue. And if you're wondering why I have 2 printers, 1

is for black & white fast printing (I run a lot of long jobs here) and

the other is an all-in-one that I can print color, or scan from.



Things I have tried:



I swapped power supplies - same problem

I took the mobo out and put it on a cardboard box to see if there was

a grounding problem - same problem

I ran a Windows Repair - same problem



The only thing that seems to correct, at least while my 4 devices (not

my 2nd printer) the USB not being recognized is shutting down the PC

and unplugging it from the power supply then plugging it back in and

powering back up.



Anyone run into this? If so, has anyone come up with a solution?



Thanks



Linda

 

[Paul]

LindaM wrote:

> Hi All,

>

> I am having an odd problem and don't know if it can be resolved. I

> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

> processor, and a 350W PSU, running Windows XP SP3r.

>

> The problem:

>

> I set up the following USB devices on the New PC exactly as I had on

> the old PC:

>

> 1) USB Wireless Mouse

> 2) Logitech PC Camera

> 3) HP Laserjet P2015 Printer

> 4) HO Officejet 6310 AIO Printer

>

> In addition I have now added:

>

> 5) 500GB Seagate External Hard Drive

>

> I set up the Laserjet first and made that my default printer. Then I

> set up the Officejet All-In-One printer. The first thing I noticed is

> the printer made itself the default printer. I literally watched it

> change. Then when I tried to print to either printer neither would

> print. If I unplug the device and plug it back in I get the message

> "windows doesn't recognize the device" and then ANYTHING I plug into

> the USB port is not recognized. And some of my other devices are no

> longer recognized.

>

> I finally uninstalled the Officejet and shut down the PC. I actually

> unplugged the PC from the power supply and then all my devices were

> seen and seemed to be ok. I just cannot add the 2nd printer.

>

> I spoke to an HP rep who insisted that I would never be able to have 2

> USB printers hooked up because the new motherboards USB ports use

> power differently and therefore I would not be able to have 2 USB

> printers hooked up (Mind you both of these printers are USB - no lpt

> ports). I find this incredibly hard to believe since the new

> motherboards don't even have LPT ports available and EVERYTHING seems

> to be going to the USB. What good is having USB devices if you can't

> have them all plugged in?

>

> Tell me this guy didn't know what he was talking about and how I can

> resolve this issue. And if you're wondering why I have 2 printers, 1

> is for black & white fast printing (I run a lot of long jobs here) and

> the other is an all-in-one that I can print color, or scan from.

>

> Things I have tried:

>

> I swapped power supplies - same problem

> I took the mobo out and put it on a cardboard box to see if there was

> a grounding problem - same problem

> I ran a Windows Repair - same problem

>

> The only thing that seems to correct, at least while my 4 devices (not

> my 2nd printer) the USB not being recognized is shutting down the PC

> and unplugging it from the power supply then plugging it back in and

> powering back up.

>

> Anyone run into this? If so, has anyone come up with a solution?

>

> Thanks

>

> Linda



I can't answer your software question, but I can answer your hardware

question.



Asus places Polyfuse devices in the USB path. A single 1.1 amp or

so (self recovering) fuse, is used to power the two USB ports in

a "stack". The USB spec limits power to 0.5 amp (i.e. 500 milliamps)

on each port. So in fact the motherboard is fully capable of powering

500mA loads on each connector. And if you're only drawing heavy

power from one connector, it will even allow a bit of overpower,

before the automatically recovering fuse opens and cuts off power.

The fuse closes, when it cools off.



Your power supply is the other, power limiting device. The

USB ports on a modern motherboard are powered from the +5VSB

power rail. If you read the label on the side of your power

supply, it may say "+5VSB @ 2A" or "+5VSB @ 3A". Those are

maximum current ratings the supply is willing to provide.



Normally, those are not a limitation. For example, there might

be an issue, if you connected four or more USB 2.5" external

hard drives to the computer.



If a printer had no other source of power, but the USB bus,

then it could draw up to 500mA. If the printer plugs

into the wall, then it won't need bus power, and only

a few milliamps will come from the USB port.



A device like an Alcatel USB DSL modem can draw 500mA. Some

of those used to violate the spec, and at 535mA or so,

would cause some computers to shut off the USB port.



If you really are limited by the power distribution scheme,

you can use a self-powered USB hub, to assist in providing

power. But unless you have the specific power-hungry devices,

I think this is a "red herring" issue.



(This USB hub comes with its own power adapter - 5V @ 2A or so.)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817364017



Here, the specification actually verifies the power supply

provided is 5V @ 2A, suitable for up to four USB ports

running at the max 500mA current each. They never provide

power adapters big enough to run all the ports flat out.

I think the biggest I've seen, is a wall adapter for 5V @ 3A

for a USB hub, but they don't make those any more. This size

seems to be common now.



http://www.startech.com/item-specs/ST7202USB-7-Port-USB-20-Hub.aspx



So, yes there are power limits, but the fact we aren't buried in

postings from people with USB power problems, tells you that

most of the time, this isn't an issue.



Older motherboards used to have a jumper on the motherboard, to

select USB powering via +5V or +5VSB, but modern motherboards

no longer support that (convenient) feature. Using +5V eliminates

all concerns about the power supply being the limit, as that rail

can provide 20A or more. The +5VSB rail used now, is a weaker

rail, but for the average person, this is not an issue.



If you're moving backup data between two USB 2.5" drives, chances

are you have enough power to do it. If you have a lot of those

drives hooked up, then there could be trouble. 3.5" external

hard drives, the ones that have a wall adapter, you can use

as many of those as you want. And that is because the wall adapter

is the major source of power.



Paul

 

[Paul]

LindaM wrote:

> Hi All,

>

> I am having an odd problem and don't know if it can be resolved. I

> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

> processor, and a 350W PSU, running Windows XP SP3r.

>

> The problem:

>

> I set up the following USB devices on the New PC exactly as I had on

> the old PC:

>

> 1) USB Wireless Mouse

> 2) Logitech PC Camera

> 3) HP Laserjet P2015 Printer

> 4) HO Officejet 6310 AIO Printer

>

> In addition I have now added:

>

> 5) 500GB Seagate External Hard Drive

>

> I set up the Laserjet first and made that my default printer. Then I

> set up the Officejet All-In-One printer. The first thing I noticed is

> the printer made itself the default printer. I literally watched it

> change. Then when I tried to print to either printer neither would

> print. If I unplug the device and plug it back in I get the message

> "windows doesn't recognize the device" and then ANYTHING I plug into

> the USB port is not recognized. And some of my other devices are no

> longer recognized.

>

> I finally uninstalled the Officejet and shut down the PC. I actually

> unplugged the PC from the power supply and then all my devices were

> seen and seemed to be ok. I just cannot add the 2nd printer.

>

> I spoke to an HP rep who insisted that I would never be able to have 2

> USB printers hooked up because the new motherboards USB ports use

> power differently and therefore I would not be able to have 2 USB

> printers hooked up (Mind you both of these printers are USB - no lpt

> ports). I find this incredibly hard to believe since the new

> motherboards don't even have LPT ports available and EVERYTHING seems

> to be going to the USB. What good is having USB devices if you can't

> have them all plugged in?

>

> Tell me this guy didn't know what he was talking about and how I can

> resolve this issue. And if you're wondering why I have 2 printers, 1

> is for black & white fast printing (I run a lot of long jobs here) and

> the other is an all-in-one that I can print color, or scan from.

>

> Things I have tried:

>

> I swapped power supplies - same problem

> I took the mobo out and put it on a cardboard box to see if there was

> a grounding problem - same problem

> I ran a Windows Repair - same problem

>

> The only thing that seems to correct, at least while my 4 devices (not

> my 2nd printer) the USB not being recognized is shutting down the PC

> and unplugging it from the power supply then plugging it back in and

> powering back up.

>

> Anyone run into this? If so, has anyone come up with a solution?

>

> Thanks

>

> Linda



I can't answer your software question, but I can answer your hardware

question.



Asus places Polyfuse devices in the USB path. A single 1.1 amp or

so (self recovering) fuse, is used to power the two USB ports in

a "stack". The USB spec limits power to 0.5 amp (i.e. 500 milliamps)

on each port. So in fact the motherboard is fully capable of powering

500mA loads on each connector. And if you're only drawing heavy

power from one connector, it will even allow a bit of overpower,

before the automatically recovering fuse opens and cuts off power.

The fuse closes, when it cools off.



Your power supply is the other, power limiting device. The

USB ports on a modern motherboard are powered from the +5VSB

power rail. If you read the label on the side of your power

supply, it may say "+5VSB @ 2A" or "+5VSB @ 3A". Those are

maximum current ratings the supply is willing to provide.



Normally, those are not a limitation. For example, there might

be an issue, if you connected four or more USB 2.5" external

hard drives to the computer.



If a printer had no other source of power, but the USB bus,

then it could draw up to 500mA. If the printer plugs

into the wall, then it won't need bus power, and only

a few milliamps will come from the USB port.



A device like an Alcatel USB DSL modem can draw 500mA. Some

of those used to violate the spec, and at 535mA or so,

would cause some computers to shut off the USB port.



If you really are limited by the power distribution scheme,

you can use a self-powered USB hub, to assist in providing

power. But unless you have the specific power-hungry devices,

I think this is a "red herring" issue.



(This USB hub comes with its own power adapter - 5V @ 2A or so.)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817364017



Here, the specification actually verifies the power supply

provided is 5V @ 2A, suitable for up to four USB ports

running at the max 500mA current each. They never provide

power adapters big enough to run all the ports flat out.

I think the biggest I've seen, is a wall adapter for 5V @ 3A

for a USB hub, but they don't make those any more. This size

seems to be common now.



http://www.startech.com/item-specs/ST7202USB-7-Port-USB-20-Hub.aspx



So, yes there are power limits, but the fact we aren't buried in

postings from people with USB power problems, tells you that

most of the time, this isn't an issue.



Older motherboards used to have a jumper on the motherboard, to

select USB powering via +5V or +5VSB, but modern motherboards

no longer support that (convenient) feature. Using +5V eliminates

all concerns about the power supply being the limit, as that rail

can provide 20A or more. The +5VSB rail used now, is a weaker

rail, but for the average person, this is not an issue.



If you're moving backup data between two USB 2.5" drives, chances

are you have enough power to do it. If you have a lot of those

drives hooked up, then there could be trouble. 3.5" external

hard drives, the ones that have a wall adapter, you can use

as many of those as you want. And that is because the wall adapter

is the major source of power.



Paul

 

[smlunatick]

On Jun 9, 7:31 pm, linda.madd...@erwyn.com (LindaM) wrote:

> Hi All,

>

> I am having an odd problem and don't know if it can be resolved. I

> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

> processor, and a 350W PSU, running Windows XP SP3r.

>

> The problem:

>

> I set up the following USB devices on the New PC exactly as I had on

> the old PC:

>

> 1) USB Wireless Mouse

> 2) Logitech PC Camera

> 3) HP Laserjet P2015 Printer

> 4) HO Officejet 6310 AIO Printer

>

> In addition I have now added:

>

> 5) 500GB Seagate External Hard Drive

>

> I set up the Laserjet first and made that my default printer. Then I

> set up the Officejet All-In-One printer. The first thing I noticed is

> the printer made itself the default printer. I literally watched it

> change. Then when I tried to print to either printer neither would

> print. If I unplug the device and plug it back in I get the message

> "windows doesn't recognize the device" and then ANYTHING I plug into

> the USB port is not recognized. And some of my other devices are no

> longer recognized.

>

> I finally uninstalled the Officejet and shut down the PC. I actually

> unplugged the PC from the power supply and then all my devices were

> seen and seemed to be ok. I just cannot add the 2nd printer.

>

> I spoke to an HP rep who insisted that I would never be able to have 2

> USB printers hooked up because the new motherboards USB ports use

> power differently and therefore I would not be able to have 2 USB

> printers hooked up (Mind you both of these printers are USB - no lpt

> ports). I find this incredibly hard to believe since the new

> motherboards don't even have LPT ports available and EVERYTHING seems

> to be going to the USB. What good is having USB devices if you can't

> have them all plugged in?

>

> Tell me this guy didn't know what he was talking about and how I can

> resolve this issue. And if you're wondering why I have 2 printers, 1

> is for black & white fast printing (I run a lot of long jobs here) and

> the other is an all-in-one that I can print color, or scan from.

>

> Things I have tried:

>

> I swapped power supplies - same problem

> I took the mobo out and put it on a cardboard box to see if there was

> a grounding problem - same problem

> I ran a Windows Repair - same problem

>

> The only thing that seems to correct, at least while my 4 devices (not

> my 2nd printer) the USB not being recognized is shutting down the PC

> and unplugging it from the power supply then plugging it back in and

> powering back up.

>

> Anyone run into this? If so, has anyone come up with a solution?

>

> Thanks

>

> Linda



It should be noted that motherboard USB ports are "grouped" together.

This is generally known as the "USB root hub." Most of these appear

to share the USB port supplied power over the USB channels. If the

requested power level exceeds the "alloted" power, the entire USB

channel shuts all USB devices on that channel. There does not seem to

be a method of adjusting this. However, you might be able to add more

power to the USB ports by adding a powered USB hub.

 

[smlunatick]

On Jun 9, 7:31 pm, linda.madd...@erwyn.com (LindaM) wrote:

> Hi All,

>

> I am having an odd problem and don't know if it can be resolved. I

> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

> processor, and a 350W PSU, running Windows XP SP3r.

>

> The problem:

>

> I set up the following USB devices on the New PC exactly as I had on

> the old PC:

>

> 1) USB Wireless Mouse

> 2) Logitech PC Camera

> 3) HP Laserjet P2015 Printer

> 4) HO Officejet 6310 AIO Printer

>

> In addition I have now added:

>

> 5) 500GB Seagate External Hard Drive

>

> I set up the Laserjet first and made that my default printer. Then I

> set up the Officejet All-In-One printer. The first thing I noticed is

> the printer made itself the default printer. I literally watched it

> change. Then when I tried to print to either printer neither would

> print. If I unplug the device and plug it back in I get the message

> "windows doesn't recognize the device" and then ANYTHING I plug into

> the USB port is not recognized. And some of my other devices are no

> longer recognized.

>

> I finally uninstalled the Officejet and shut down the PC. I actually

> unplugged the PC from the power supply and then all my devices were

> seen and seemed to be ok. I just cannot add the 2nd printer.

>

> I spoke to an HP rep who insisted that I would never be able to have 2

> USB printers hooked up because the new motherboards USB ports use

> power differently and therefore I would not be able to have 2 USB

> printers hooked up (Mind you both of these printers are USB - no lpt

> ports). I find this incredibly hard to believe since the new

> motherboards don't even have LPT ports available and EVERYTHING seems

> to be going to the USB. What good is having USB devices if you can't

> have them all plugged in?

>

> Tell me this guy didn't know what he was talking about and how I can

> resolve this issue. And if you're wondering why I have 2 printers, 1

> is for black & white fast printing (I run a lot of long jobs here) and

> the other is an all-in-one that I can print color, or scan from.

>

> Things I have tried:

>

> I swapped power supplies - same problem

> I took the mobo out and put it on a cardboard box to see if there was

> a grounding problem - same problem

> I ran a Windows Repair - same problem

>

> The only thing that seems to correct, at least while my 4 devices (not

> my 2nd printer) the USB not being recognized is shutting down the PC

> and unplugging it from the power supply then plugging it back in and

> powering back up.

>

> Anyone run into this? If so, has anyone come up with a solution?

>

> Thanks

>

> Linda



It should be noted that motherboard USB ports are "grouped" together.

This is generally known as the "USB root hub." Most of these appear

to share the USB port supplied power over the USB channels. If the

requested power level exceeds the "alloted" power, the entire USB

channel shuts all USB devices on that channel. There does not seem to

be a method of adjusting this. However, you might be able to add more

power to the USB ports by adding a powered USB hub.

 

[sgopus]

You can have two usb printers installed at the same time, however you can't

have them both on when you are installing another, turn one off and then

attempt to install the new one, and as the other posters have said, use a

HUB, not the USB ports on the PC directly.

Once they are both installed you can select which one is default.



"LindaM" wrote:



> Hi All,

>

> I am having an odd problem and don't know if it can be resolved. I

> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

> processor, and a 350W PSU, running Windows XP SP3r.

>

> The problem:

>

> I set up the following USB devices on the New PC exactly as I had on

> the old PC:

>

> 1) USB Wireless Mouse

> 2) Logitech PC Camera

> 3) HP Laserjet P2015 Printer

> 4) HO Officejet 6310 AIO Printer

>

> In addition I have now added:

>

> 5) 500GB Seagate External Hard Drive

>

> I set up the Laserjet first and made that my default printer. Then I

> set up the Officejet All-In-One printer. The first thing I noticed is

> the printer made itself the default printer. I literally watched it

> change. Then when I tried to print to either printer neither would

> print. If I unplug the device and plug it back in I get the message

> "windows doesn't recognize the device" and then ANYTHING I plug into

> the USB port is not recognized. And some of my other devices are no

> longer recognized.

>

> I finally uninstalled the Officejet and shut down the PC. I actually

> unplugged the PC from the power supply and then all my devices were

> seen and seemed to be ok. I just cannot add the 2nd printer.

>

> I spoke to an HP rep who insisted that I would never be able to have 2

> USB printers hooked up because the new motherboards USB ports use

> power differently and therefore I would not be able to have 2 USB

> printers hooked up (Mind you both of these printers are USB - no lpt

> ports). I find this incredibly hard to believe since the new

> motherboards don't even have LPT ports available and EVERYTHING seems

> to be going to the USB. What good is having USB devices if you can't

> have them all plugged in?

>

> Tell me this guy didn't know what he was talking about and how I can

> resolve this issue. And if you're wondering why I have 2 printers, 1

> is for black & white fast printing (I run a lot of long jobs here) and

> the other is an all-in-one that I can print color, or scan from.

>

> Things I have tried:

>

> I swapped power supplies - same problem

> I took the mobo out and put it on a cardboard box to see if there was

> a grounding problem - same problem

> I ran a Windows Repair - same problem

>

> The only thing that seems to correct, at least while my 4 devices (not

> my 2nd printer) the USB not being recognized is shutting down the PC

> and unplugging it from the power supply then plugging it back in and

> powering back up.

>

> Anyone run into this? If so, has anyone come up with a solution?

>

> Thanks

>

> Linda

> .

>

 

[LindaM]

Thank you to all who posted. And Paul, thank you for your detailed

explanation. That really clarified a lot of things for me.



I will try the USB Hub that Paul recommended and I will try shutting

the one printer off when I install the other printer as was suggested

by sgopus. It never occurred to me to shut one of them off.



I will post back if/when I resolve this issue.



Thanks again for all the advice,



LInda





sgopus wrote:



>You can have two usb printers installed at the same time, however you can't

>have them both on when you are installing another, turn one off and then

>attempt to install the new one, and as the other posters have said, use a

>HUB, not the USB ports on the PC directly.

>Once they are both installed you can select which one is default.

>

>"LindaM" wrote:

>

>> Hi All,

>>

>> I am having an odd problem and don't know if it can be resolved. I

>> recently built a new machine using ASUS P5G41-M with 4GB RAM, an Intel

>> Core 2 Duo 3GHz processor, and a 380W PSU, running Windows XP SP3. The

>> old Machine was an ASUS P5L-VM, with 2GB RAM, an Intel Pentium D

>> processor, and a 350W PSU, running Windows XP SP3r.

>>

>> The problem:

>>

>> I set up the following USB devices on the New PC exactly as I had on

>> the old PC:

>>

>> 1) USB Wireless Mouse

>> 2) Logitech PC Camera

>> 3) HP Laserjet P2015 Printer

>> 4) HO Officejet 6310 AIO Printer

>>

>> In addition I have now added:

>>

>> 5) 500GB Seagate External Hard Drive

>>

>> I set up the Laserjet first and made that my default printer. Then I

>> set up the Officejet All-In-One printer. The first thing I noticed is

>> the printer made itself the default printer. I literally watched it

>> change. Then when I tried to print to either printer neither would

>> print. If I unplug the device and plug it back in I get the message

>> "windows doesn't recognize the device" and then ANYTHING I plug into

>> the USB port is not recognized. And some of my other devices are no

>> longer recognized.

>>

>> I finally uninstalled the Officejet and shut down the PC. I actually

>> unplugged the PC from the power supply and then all my devices were

>> seen and seemed to be ok. I just cannot add the 2nd printer.

>>

>> I spoke to an HP rep who insisted that I would never be able to have 2

>> USB printers hooked up because the new motherboards USB ports use

>> power differently and therefore I would not be able to have 2 USB

>> printers hooked up (Mind you both of these printers are USB - no lpt

>> ports). I find this incredibly hard to believe since the new

>> motherboards don't even have LPT ports available and EVERYTHING seems

>> to be going to the USB. What good is having USB devices if you can't

>> have them all plugged in?

>>

>> Tell me this guy didn't know what he was talking about and how I can

>> resolve this issue. And if you're wondering why I have 2 printers, 1

>> is for black & white fast printing (I run a lot of long jobs here) and

>> the other is an all-in-one that I can print color, or scan from.

>>

>> Things I have tried:

>>

>> I swapped power supplies - same problem

>> I took the mobo out and put it on a cardboard box to see if there was

>> a grounding problem - same problem

>> I ran a Windows Repair - same problem

>>

>> The only thing that seems to correct, at least while my 4 devices (not

>> my 2nd printer) the USB not being recognized is shutting down the PC

>> and unplugging it from the power supply then plugging it back in and

>> powering back up.

>>

>> Anyone run into this? If so, has anyone come up with a solution?

>>

>> Thanks

>>

>> Linda

>> .

>>