how can I tell USB1 from USB2 hardware/software?!

vees · 08-08-2006, 02:53 PM

Hi,

How can I tell if a computer's USB ports are USB1 or USB2? Also - how can I tell whether the OS running on a computer can handle USB2 or not?

Thanks,

VS

bernied · 08-08-2006, 03:09 PM

If you're running linux, try

Code:

lspci -v

and look for the USB devices. Look for OHCI, UHCI (both USB1), and EHCI (USB2). You may find, like me, that you have both kinds on your machine.

You could also try

Code:

lsmod | grep usb

again you are looking for those protocol names

There is also an

Code:

lsusb

and again you can add the -v option for lots of information

That's about as much as I know.

Brian1 · 08-08-2006, 03:13 PM

No easy way unless you know the chipset or make and model of the controller.

One way under linux is to use a easy to use gui tool called usbview. If using linux it may already be installed. Tells about connected hardware. Sometimes the command ' lsusb ' and ' lspci ' can tell alot.

For OS if we are talking linux then most new distros should easily handle both. If you type the command ' lsmod ' it will list loaded modules. For USB there are 3 differnet ones.
ohci-hcd and uhci-hcd - either one is used for USB versions 1.0 - 1.1
ehci-hcd is for 2.0 USB controllers.

One thing to note if you have say a gateway, dell, or any of the mail order brands then sometimes they have ports in front and on back. Sometimes these ports may be 1.0 on front and 2.0 on back or vice-a-versa.

Brian1

vees · 08-09-2006, 08:26 AM

thanks a lot for all these pointers - solved my problem!