Am 05. Mar, 2007 schwätzte Eric "Shubes" so: > der.hans wrote: >> moin moin, >> >> anyone know how to tell what USB protocol version is being used to talk to >> a device? >> >> I'm pretty certain the devices is v 2.0 capable. I'm not sure about the >> USB port it's connected to. Any way to find out what versions the physical >> port supports? >> >> Any way to find out what version is actually being used to talk to the >> device? >> >> It's probably in the lsusb output somewhere, but it's not making sense to >> me right now. >> >> ciao, >> >> der.hans > > On my system, lspci shows USB 1.0 clear as day. Hmmm. Does rev 02 mean 2.0? > I don't know about what version is actually being used though. That would be > an attribute of the connection. I'm guess it'd be in /proc somewhere (when > the device in question is connected, of course). > > Methinks you might need a little sleep, dh. ;) Yes, I did. s/did/do/. Especially when I didn't think to confirm that there are even less than 2.0 devices on the box. I still would've needed to ask, it would've been good to say. 00:1d.0 USB Controller: Intel Corporation 6300ESB USB Universal Host Controller (rev 02) 00:1d.1 USB Controller: Intel Corporation 6300ESB USB Universal Host Controller (rev 02) 00:1d.7 USB Controller: Intel Corporation 6300ESB USB2 Enhanced Host Controller (rev 02) -v and -vv still don't say in plain english, but are harder to grep. 00:1d.0 USB Controller: Intel Corporation 6300ESB USB Universal Host Controller (rev 02) (prog-if 00 [UHCI]) Subsystem: Super Micro Computer Inc: Unknown device 6080 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR-