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janpla
Tux's lil' helper
Joined: 13 Jun 2005
Posts: 75
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 Posted: Wed Apr 12, 2006 12:58 pm Post subject: How do I see the USB version? |
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| When I use lsusb -v the most likely candidate seems to be the entry labeled 'bcdUSB', but I haven't been able to find any documentation of what it all means. The reason I ask is that I have a machine with both USB 1 and 2 on it, but how do I tell which is which? I don't have the HW manuals or anything, ony the box. |
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sternklang
Veteran
Joined: 10 Sep 2005
Posts: 1641
Location: Somewhere in time and space
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| Posted: Wed Apr 12, 2006 1:13 pm Post subject: |
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| If your motherboard supports USB2.0, the ports are also backwards-compatible with 1.0/1.1 so you can just plug any USB device into any port and it will work at the appropriate speed (assuming there's a linux driver for the device). |
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DaveArb
Guru
Joined: 29 Apr 2004
Posts: 510
Location: Texas, USA
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| Posted: Wed Apr 12, 2006 2:50 pm Post subject: |
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I believe this accurately reports the USB versions.
| Code: | | grep Ver= /proc/bus/usb/devices |
Dave |
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Kernel & Hardware
