USB port slow

  • Thread starter Thread starter Man T
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Man T

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XP SP3

My home pc is very slow in copying file from HD to USB port.

It took 50 minutest copy a 1.2GB from HD to USB flash key. I thought the

problem of my USB key, but it's not. I tried to copy 2.5 GB file in my work

pc from USB(my colleague's USB key) to USB(my current USB key), took about

10 minutes.



My HD is fast, so should not be the problem.

I tried a differenet USB port in my home pc, still very slow.



How do I know which USB port is USB 2.0?
 
Mike S wrote:

> On 6/14/2010 3:50 AM, Man T wrote:

>> XP SP3

>> My home pc is very slow in copying file from HD to USB port.

>> It took 50 minutest copy a 1.2GB from HD to USB flash key. I thought the

>> problem of my USB key, but it's not. I tried to copy 2.5 GB file in my

>> work

>> pc from USB(my colleague's USB key) to USB(my current USB key), took

>> about

>> 10 minutes.

>>

>> My HD is fast, so should not be the problem.

>> I tried a differenet USB port in my home pc, still very slow.

>>

>> How do I know which USB port is USB 2.0?

>

> How can I tell if I have USB 2.0?

> http://ask-leo.com/how_can_i_tell_if_i_have_usb_20.html

>

> If you are stuck with USB 1 on the m/b you might consider buying a USB

> 2.0 PCI card, e.g.

>

> http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1070706&CatId=511

>



The ask-leo reference is mostly right.



There are a few motherboards, with a mixture of USB 1.1 and USB 2.0 connectors

on them. That happened around the transition from USB 1.1 to USB 2.0. The chipset

(Southbridge) may only be USB 1.1, and the manufacturer added a NEC USB2 chip

to the motherboard, to run some of the other connectors. In that case, you need

to consult the product documentation, to see which connector is wired to which chip.



For anything more modern than that, as the ask-leo reference says, finding

the word "Enhanced" in the Device Manager, in the USB section, is what

you're looking for.



it is also possible, to enter the BIOS, and turn off USB2 mode with a

BIOS setting. So verifying the USB section in the BIOS, is also part

of the checking process. The BIOS setting would control the

Southbridge USB port behavior. Once the BIOS setting has been

corrected, you go back to Device Manager in Windows, and hope

an "Enhanced" entry is waiting for you.



There are some more Device Manager pictures here.



http://www.usbman.com/Guides/checking_for_usb_2.htm



Paul
 
Thanks, I need to consult my motherboard manual.



It's a bit strange as my home system was built 6 months ago, even much newer

than my work pc (have been working for more than 1 year).

Shouldn't XP SP3 will update/enable all USB 2.0 port automatically?



>> If you are stuck with USB 1 on the m/b you might consider buying a USB

>> 2.0 PCI card, e.g.

>>

>> http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1070706&CatId=511

>

> The ask-leo reference is mostly right.

>

> There are a few motherboards, with a mixture of USB 1.1 and USB 2.0

> connectors

> on them. That happened around the transition from USB 1.1 to USB 2.0. The

> chipset

> (Southbridge) may only be USB 1.1, and the manufacturer added a NEC USB2

> chip

> to the motherboard, to run some of the other connectors. In that case, you

> need

> to consult the product documentation, to see which connector is wired to

> which chip.

>

> For anything more modern than that, as the ask-leo reference says, finding

> the word "Enhanced" in the Device Manager, in the USB section, is what

> you're looking for.

>

> it is also possible, to enter the BIOS, and turn off USB2 mode with a

> BIOS setting. So verifying the USB section in the BIOS, is also part

> of the checking process. The BIOS setting would control the

> Southbridge USB port behavior. Once the BIOS setting has been

> corrected, you go back to Device Manager in Windows, and hope

> an "Enhanced" entry is waiting for you.

>

> There are some more Device Manager pictures here.

>

> http://www.usbman.com/Guides/checking_for_usb_2.htm
 
On Jun 14, 9:29 pm, "Alan T" wrote:

> Thanks, I need to consult my motherboard manual.

>

> It's a bit strange as my home system was built 6 months ago, even much newer

> than my work pc (have been working for more than 1 year).

> Shouldn't XP SP3 will update/enable all USB 2.0 port automatically?

>

>

>

> >> If you are stuck with USB 1 on the m/b you might consider buying a USB

> >> 2.0 PCI card, e.g.

>

> >>http://www.tigerdirect.com/applications/SearchTools/item-details.asp?....

>

> > The ask-leo reference is mostly right.

>

> > There are a few motherboards, with a mixture of USB 1.1 and USB 2.0

> > connectors

> > on them. That happened around the transition from USB 1.1 to USB 2.0. The

> > chipset

> > (Southbridge) may only be USB 1.1, and the manufacturer added a NEC USB2

> > chip

> > to the motherboard, to run some of the other connectors. In that case, you

> > need

> > to consult the product documentation, to see which connector is wired to

> > which chip.

>

> > For anything more modern than that, as the ask-leo reference says, finding

> > the word "Enhanced" in the Device Manager, in the USB section, is what

> > you're looking for.

>

> > it is also possible, to enter the BIOS, and turn off USB2 mode with a

> > BIOS setting. So verifying the USB section in the BIOS, is also part

> > of the checking process. The BIOS setting would control the

> > Southbridge USB port behavior. Once the BIOS setting has been

> > corrected, you go back to Device Manager in Windows, and hope

> > an "Enhanced" entry is waiting for you.

>

> > There are some more Device Manager pictures here.

>

> >http://www.usbman.com/Guides/checking_for_usb_2.htm



We can help determine your situation if you do this:



Please provide additional information about your system:



Click Start, Run and in the box enter:



msinfo32



Click OK, and when the System Summary info appears, click Edit, Select

All, Copy and then paste the information back here.



There will be some personal information (like System Name and User

Name), and whatever appears to be private information to you, just

delete it from the pasted information.



Open Device Manager, by clicking Start, Run and in the box enter:



%SystemRoot%\system32\devmgmt.msc



Click OK.



Do you see any red Xs or yellow ?s and if so, in what sections?



Now expand the Universal Serial Bus controllers section and look for

the words:



Enhanced Host Controller



Do you see Enhanced Host Controller or not?



This will minimize back and forth Q&A and eliminate guesswork.
 
Alan T wrote:

> Thanks, I need to consult my motherboard manual.

>

> It's a bit strange as my home system was built 6 months ago, even much newer

> than my work pc (have been working for more than 1 year).

> Shouldn't XP SP3 will update/enable all USB 2.0 port automatically?

>



A 6 month old system should be entirely USB2.



You will see either one or two "Enhanced" entries in the Device Manager.

Two Enhanced entries is enough to control up to 12 USB2 connectors. The

entry corresponds to the logic block controlling the connectors, rather

than being "one per connector".



Check the BIOS first. I got surprised once, when USB2 seemed to be

turned off on my system. And I did not remember changing the BIOS

setting, and yet USB2 had been disabled at the BIOS level. Check

that first, in the BIOS setup screen. The key to press, to enter

the BIOS, should be printed on the screen at powerup.



Sometimes, detection of USB2 fails. And one solution, is to delete

the entries in Device Manager, and let Windows detect the hardware

again. Example here. This might happen, after a Service Pack upgrade.



http://www.usbman.com/Guides/Cleanup Device Manager Safe Mode.htm



Paul
 
On 6/14/2010 3:50 AM, Man T wrote:

> XP SP3

> My home pc is very slow in copying file from HD to USB port.

> It took 50 minutest copy a 1.2GB from HD to USB flash key. I thought the

> problem of my USB key, but it's not. I tried to copy 2.5 GB file in my work

> pc from USB(my colleague's USB key) to USB(my current USB key), took about

> 10 minutes.

>

> My HD is fast, so should not be the problem.

> I tried a differenet USB port in my home pc, still very slow.

>

> How do I know which USB port is USB 2.0?



How can I tell if I have USB 2.0?

http://ask-leo.com/how_can_i_tell_if_i_have_usb_20.html



If you are stuck with USB 1 on the m/b you might consider buying a USB

2.0 PCI card, e.g.



http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1070706&CatId=511
 
Hi,

this is my System Summary info:



OS Name Microsoft Windows XP Professional

Version 5.1.2600 Service Pack 3 Build 2600

OS Manufacturer Microsoft Corporation

System Name

System Manufacturer Gigabyte Technology Co., Ltd.

System Model GA-MA790XT-UD4P

System Type X86-based PC

Processor x86 Family 16 Model 4 Stepping 2 AuthenticAMD ~2812 Mhz

BIOS Version/Date Award Software International, Inc. F4, 21/05/2009

SMBIOS Version 2.4

Windows Directory C:\WINDOWS

System Directory C:\WINDOWS\system32

Boot Device \Device\HarddiskVolume1

Locale United States

Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"

User Name

Time Zone AUS Eastern Standard Time

Total Physical Memory 4,096.00 MB

Available Physical Memory 2.16 GB

Total Virtual Memory 2.00 GB

Available Virtual Memory 1.96 GB

Page File Space 5.09 GB

Page File C:\pagefile.sys



Device Manager:

Yes, I got some yellow question marks in Device Manager:

Other devices

- Universal Serial Bus (USB) Controller

- Universal Serial Bus (USB) Controller



For the Universal Serial Bus controllers

- Standard OpenHCD USB Host Controller

- Standard OpenHCD USB Host Controller

- Standard OpenHCD USB Host Controller

- Standard OpenHCD USB Host Controller

- Standard OpenHCD USB Host Controller



It looks like my Windows did not detect USB 2.0 in my system.
 
In addition, I read the BIOS screen(show up for 5 seconds) when I boot up

the pc there are 4 USB port are 1.1 and 2 USB port are 2.0.
 
You install all the motherboard drivers?

http://www.gigabyte.us/Support/Motherboard/Driver_Model.aspx?ProductID=3012&ost=xp#anchor_os



Man T wrote:



> Hi,

> this is my System Summary info:

>

> OS Name Microsoft Windows XP Professional

> Version 5.1.2600 Service Pack 3 Build 2600

> OS Manufacturer Microsoft Corporation

> System Name

> System Manufacturer Gigabyte Technology Co., Ltd.

> System Model GA-MA790XT-UD4P

> System Type X86-based PC

> Processor x86 Family 16 Model 4 Stepping 2 AuthenticAMD ~2812 Mhz

> BIOS Version/Date Award Software International, Inc. F4, 21/05/2009

> SMBIOS Version 2.4

> Windows Directory C:\WINDOWS

> System Directory C:\WINDOWS\system32

> Boot Device \Device\HarddiskVolume1

> Locale United States

> Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"

> User Name

> Time Zone AUS Eastern Standard Time

> Total Physical Memory 4,096.00 MB

> Available Physical Memory 2.16 GB

> Total Virtual Memory 2.00 GB

> Available Virtual Memory 1.96 GB

> Page File Space 5.09 GB

> Page File C:\pagefile.sys

>

> Device Manager:

> Yes, I got some yellow question marks in Device Manager:

> Other devices

> - Universal Serial Bus (USB) Controller

> - Universal Serial Bus (USB) Controller

>

> For the Universal Serial Bus controllers

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

>

> It looks like my Windows did not detect USB 2.0 in my system.

>

>
 
Also read this.

http://www.gigabyte.us/Support/Motherboard/FAQ_List.aspx?FAQID=4665





Man T wrote:



> Hi,

> this is my System Summary info:

>

> OS Name Microsoft Windows XP Professional

> Version 5.1.2600 Service Pack 3 Build 2600

> OS Manufacturer Microsoft Corporation

> System Name

> System Manufacturer Gigabyte Technology Co., Ltd.

> System Model GA-MA790XT-UD4P

> System Type X86-based PC

> Processor x86 Family 16 Model 4 Stepping 2 AuthenticAMD ~2812 Mhz

> BIOS Version/Date Award Software International, Inc. F4, 21/05/2009

> SMBIOS Version 2.4

> Windows Directory C:\WINDOWS

> System Directory C:\WINDOWS\system32

> Boot Device \Device\HarddiskVolume1

> Locale United States

> Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"

> User Name

> Time Zone AUS Eastern Standard Time

> Total Physical Memory 4,096.00 MB

> Available Physical Memory 2.16 GB

> Total Virtual Memory 2.00 GB

> Available Virtual Memory 1.96 GB

> Page File Space 5.09 GB

> Page File C:\pagefile.sys

>

> Device Manager:

> Yes, I got some yellow question marks in Device Manager:

> Other devices

> - Universal Serial Bus (USB) Controller

> - Universal Serial Bus (USB) Controller

>

> For the Universal Serial Bus controllers

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

>

> It looks like my Windows did not detect USB 2.0 in my system.

>

>
 
Man T wrote:

> In addition, I read the BIOS screen(show up for 5 seconds) when I boot up

> the pc there are 4 USB port are 1.1 and 2 USB port are 2.0.

>

>



GA-MA790XT-UD4P (rev. 1.0)



http://www.gigabyte.us/Products/Motherboard/Products_Overview.aspx?ProductID=3012



User manual. (I like their FTP site, for faster transfers.)



ftp://download.gigabyte.ru/manual/motherboard_manual_ga-ma790xt-ud4p_e.pdf



The manual says "Press the key" to enter the BIOS setup screens

immediately after powerup.



In the "Integrated Peripheral" screen of the BIOS setup screens, you

can find:



OnChip USB Controller

Enables or disables the integrated USB 1.1 controller. (Default: Enabled)



USB EHCI Controller

Enables or disables the integrated USB 2.0 controller. (Default: Enabled)



The EHCI (Enhanced) one is the one you want to check. Both of those settings

should be Enabled.



Your report of "four USB 1.1" and "two USB 2.0" means the following.

There are four USB 1.1 "logic blocks", not ports. On that particular

chipset (SB750 Southbridge), ATI decided it would be fun if a

USB 1.1 logic block controls three USB connectors. 4*3 = 12 connectors max.



The USB 2.0 logic blocks, control six ports each. 2*6 = 12 connectors max.



Any of your 12 connectors can be run in either mode. You may have eight

connectors on the back panel, and two 2x5 header plugs (two connectors

worth each) on the motherboard surface, to account for 12 connectors max.



http://images17.newegg.com/is/image/newegg/13-128-378-S02?$S640W$



It sounds like both USB settings in the BIOS (USB 1.1 and USB 2.0) are

both enabled. Your "logic blocks" are likely what is being listed,

not an inventory of connectors. But you should check it anyway.

The report of four of one type, and two of the other, should be

sufficient in this case, to control 12 connectors.



*******



http://www.usbman.com



Windows XP



Microsoft Win XP USB 2.0 drivers are included in Service Pack 1



Windows 2000



Microsoft Windows 2000 USB 2.0 drivers are included in Service Pack 4



That tells you the minimum service pack that needs to be installed,

in order for USB2 to be detected in the OS.



If two Enhanced entries are not appearing in your Device Manager,

then try the cleanup procedure.



http://www.usbman.com/Guides/Cleanup Device Manager Safe Mode.htm



Sometimes, the installation of a Service Pack, after the SP1 minimum,

causes USB stuff to disappear. And that is when you do the Cleanup

procedure, and hope it is all detected again.



The motherboard box should include a driver CD. There may be a

chipset installer package included on the driver CD. Installing

the chipset package, helps enumerate the logic presented by the

chipset, so the OS can use it. Perhaps something is needed from

that, to get USB working right ? I normally install the chipset

driver, right after the OS install is done to some level. On older

chipsets, the OS already knows most of it. The SB750 might have

been released after SP3, and is more recent.



Paul
 
On Jun 15, 5:54 am, "Man T" wrote:

> Hi,

> this is my System Summary info:

>

> OS Name Microsoft Windows XP Professional

> Version 5.1.2600 Service Pack 3 Build 2600

> OS Manufacturer Microsoft Corporation

> System Name

> System Manufacturer Gigabyte Technology Co., Ltd.

> System Model GA-MA790XT-UD4P

> System Type X86-based PC

> Processor x86 Family 16 Model 4 Stepping 2 AuthenticAMD ~2812 Mhz

> BIOS Version/Date Award Software International, Inc. F4, 21/05/2009

> SMBIOS Version 2.4

> Windows Directory C:\WINDOWS

> System Directory C:\WINDOWS\system32

> Boot Device \Device\HarddiskVolume1

> Locale United States

> Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"

> User Name

> Time Zone AUS Eastern Standard Time

> Total Physical Memory 4,096.00 MB

> Available Physical Memory 2.16 GB

> Total Virtual Memory 2.00 GB

> Available Virtual Memory 1.96 GB

> Page File Space 5.09 GB

> Page File C:\pagefile.sys

>

> Device Manager:

> Yes, I got some yellow question marks in Device Manager:

> Other devices

> - Universal Serial Bus (USB) Controller

> - Universal Serial Bus (USB) Controller

>

> For the Universal Serial Bus controllers

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

>

> It looks like my Windows did not detect USB 2.0 in my system.



That is not what it looks like to me.



It looks like your system drivers are out of date (this happens) and

XP is doing the best it can with the old stuff it has. I would not

count on the drivers being up to date on any system you bought from

the store or a system you put together yourself and don't trust any CD

that comes with it your system or motherboard to have the latest stuff

on it. Always go to the manufacturer site to see if there are updates

for you. In your case, there are.



If you do not see the word Enhanced in Device Manager, your drivers

are old and need to be updated (at least this is my experience).



Does this message indicating out of date USB divers look familiar?



This device can perform faster if it was connected to a high speed USB

2.0 device



A simple driver update will cure that problem.



It looks to me like you need to go to the Gigabyte support page, see

what their latest drivers and BIOS versions are, compare them to yours

and get your system current.



I would do the chipset drivers first, since some folks feel antsy

about updating the BIOS (your msinfo32 information says you are a few

versions behind).



XP Chipset drivers (and other drivers) for you are here:



http://www.gigabyte.us/Support/Motherboard/Driver_Model.aspx?ProductID=3012&ost=xp#anchor_os



BIOS updates for you are here:



http://www.gigabyte.us/Support/Motherboard/BIOS_Model.aspx?ProductID=3012



I can't do the legwork for you, but maybe somebody else will volunteer

to walk you through figuring it out.



Then when you are done, we can clean up your Device Manager of any

remaining warnings or errors so there are no warnings (yellows) at all

- and what a good feeling that will be.
 
Is that mean I have only 2 USB Port 2.0 and the rest 4 are USB 1.1?



"Jose" wrote in message

news:949b798a-a65c-419e-9a5d-0183d74dd4b2@c10g2000yqi.googlegroups.com...

On Jun 15, 5:54 am, "Man T" wrote:

> Hi,

> this is my System Summary info:

>

> OS Name Microsoft Windows XP Professional

> Version 5.1.2600 Service Pack 3 Build 2600

> OS Manufacturer Microsoft Corporation

> System Name

> System Manufacturer Gigabyte Technology Co., Ltd.

> System Model GA-MA790XT-UD4P

> System Type X86-based PC

> Processor x86 Family 16 Model 4 Stepping 2 AuthenticAMD ~2812 Mhz

> BIOS Version/Date Award Software International, Inc. F4, 21/05/2009

> SMBIOS Version 2.4

> Windows Directory C:\WINDOWS

> System Directory C:\WINDOWS\system32

> Boot Device \Device\HarddiskVolume1

> Locale United States

> Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"

> User Name

> Time Zone AUS Eastern Standard Time

> Total Physical Memory 4,096.00 MB

> Available Physical Memory 2.16 GB

> Total Virtual Memory 2.00 GB

> Available Virtual Memory 1.96 GB

> Page File Space 5.09 GB

> Page File C:\pagefile.sys

>

> Device Manager:

> Yes, I got some yellow question marks in Device Manager:

> Other devices

> - Universal Serial Bus (USB) Controller

> - Universal Serial Bus (USB) Controller

>

> For the Universal Serial Bus controllers

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

> - Standard OpenHCD USB Host Controller

>

> It looks like my Windows did not detect USB 2.0 in my system.



That is not what it looks like to me.



It looks like your system drivers are out of date (this happens) and

XP is doing the best it can with the old stuff it has. I would not

count on the drivers being up to date on any system you bought from

the store or a system you put together yourself and don't trust any CD

that comes with it your system or motherboard to have the latest stuff

on it. Always go to the manufacturer site to see if there are updates

for you. In your case, there are.



If you do not see the word Enhanced in Device Manager, your drivers

are old and need to be updated (at least this is my experience).



Does this message indicating out of date USB divers look familiar?



This device can perform faster if it was connected to a high speed USB

2.0 device



A simple driver update will cure that problem.



It looks to me like you need to go to the Gigabyte support page, see

what their latest drivers and BIOS versions are, compare them to yours

and get your system current.



I would do the chipset drivers first, since some folks feel antsy

about updating the BIOS (your msinfo32 information says you are a few

versions behind).



XP Chipset drivers (and other drivers) for you are here:



http://www.gigabyte.us/Support/Motherboard/Driver_Model.aspx?ProductID=3012&ost=xp#anchor_os



BIOS updates for you are here:



http://www.gigabyte.us/Support/Motherboard/BIOS_Model.aspx?ProductID=3012



I can't do the legwork for you, but maybe somebody else will volunteer

to walk you through figuring it out.



Then when you are done, we can clean up your Device Manager of any

remaining warnings or errors so there are no warnings (yellows) at all

- and what a good feeling that will be.
 
Yes, deleted the USB entries under 'Yellow' question marks.

Reboot XP, then the 'Enhanced' USB are shown.



BTW, how do I know which 2 ports are USB 2.0?
 
Man T wrote:

> Yes, deleted the USB entries under 'Yellow' question marks.

> Reboot XP, then the 'Enhanced' USB are shown.

>

> BTW, how do I know which 2 ports are USB 2.0?

>



The "Enhanced" entries in Device Manager are not ports.



One "Enhanced" entry, controls six or eight connectors,

and provides USB2 services.



On a motherboard with twelve connectors, it makes

sense to use two Enhanced controllers controlling

six connectors each. So all twelve connectors on

the motherboard can run at USB2 rates.



Controller Controller

/ | | | | \ / | | | | \

#1 #2 #3 #4 #5 #6 #7 #8 #9 10 11 12



Your USB 1.1 Controllers, have a ratio of one controller

for three connectors. (Many older motherboards chose

a ratio of one USB 1.1 controller per two USB ports.)

This is how your motherboard does it. These ratios are

fixed by the design of the Southbridge.



Controller Controller Controller Controller

/ | \ / | \ / | \ / | \

#1 #2 #3 #4 #5 #6 #7 #8 #9 10 11 12



At runtime, when you plug in a USB device, the negotiation

process "binds" the connector to either a USB2 controller

or to a USB 1.1 controller. All 12 connectors could run at

USB 1.1 rates if they wanted. All 12 connectors could run

at USB 2.0 rates. There is enough hardware for any mix

of those two rates.



Retail motherboards may place most of the USB connectors

on the back (like eight of them), and put the remainder

on expansion headers (2x5 pin block) on the motherboard

surface. You need cabling connected to the 2x5 pin block,

to add more connectors. Each 2x5 pin block supports

two connectors. This is an example of an adapter

for such a purpose. The two blue things are 2x5 connectors.

The plate has four USB connectors on it.



http://estore.asus.com/images/14-000500010.jpg



There is a utility, which you can use to read the config

info from a USB device. But it is no longer available for

download from Microsoft. (The bums at Microsoft, even

had the copies on archive.org removed. And probably because

I posted URLs leading to the copies.) This is the info

for that utility, if you need it some day. With some practice,

you can tell whether a device is operating at USB 1.1 or USB 2.0

rates, without having to resort to benchmarking to figure

it out. UVCView is similar to the previous USBView, but had

added to it, some stuff for USB Video Class support (like

for webcams). This is how you find out about your "ports" -

this works at the port level.



*******

ftp://ftp.efo.ru/pub/ftdichip/Utilities/UVCView.x86.exe

http://www.users.on.net/~fzabkar/USB_IDs/UVCView.x86.exe



File size is 167,232 bytes.

MD5sum is 93244d84d79314898e62d21cecc4ca5e



This is a picture of what the UVCView info looks like.



http://www.die.de/blog/content/binary/usbview.png



Some information on the parameters seen in UVCView.



http://www.beyondlogic.org/usbnutshell/usb5.htm

*******



Paul
 
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