USB2.0 or USB 1.1 or USB 1.0?

chinmays · 02-20-2006, 05:55 PM

How do i find out whether i have USB2.0, USB1.1 or USb 1.0?
I am using Redhat 9, 2.4.20-31.9.

Brian1 · 02-20-2006, 06:14 PM

cat /proc/bus/usb/devices might tell you something.
the command ' lspci ' might mention the hardware.
the command ' lsmod ' will mention loaded modules.
* module ehci-hcd for 2.0 usb devices
* module ohci-hcd or uhci-hcd for 1.0-1.1 usb devices.
the command ' lsusb ' might help.
the gui app ' usbview ' list lots of info in easy to read display.

exvor · 02-20-2006, 06:32 PM

Use the force.

or you could just look up the date of manufacture. anything after 2003 is usb2.0

or lspci may tell you.

Hope this helps

chinmays · 02-20-2006, 06:38 PM

This is the output of /proc/bus/usb/devices

Quote:

T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 4
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB OHCI Root Hub
S: SerialNumber=f8811000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

This is the output of /proc/bus/usb/lspci

Quote:

00:00.0 Host bridge: ServerWorks CNB20LE Host Bridge (rev 05)
00:00.1 Host bridge: ServerWorks CNB20LE Host Bridge (rev 05)
00:01.0 VGA compatible controller: S3 Inc. Savage 4 (rev 04)
00:09.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 08)
00:0f.0 ISA bridge: ServerWorks OSB4 South Bridge (rev 4f)
00:0f.1 IDE interface: ServerWorks OSB4 IDE Controller
00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 04)
01:03.0 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01)
01:03.1 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01)
01:06.0 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03)
01:06.1 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03)
01:07.0 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03)
01:07.1 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03)

This info is contained in /var/log/messages

Quote:

usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
host/usb-uhci.c: $Revision: 1.275 $ time 21:27:57 Feb 18 2006
host/usb-uhci.c: High bandwidth mode enabled
host/usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
host/usb-ohci.c: USB OHCI at membase 0xf8811000, IRQ 9
host/usb-ohci.c: usb-00:0f.2, ServerWorks OSB4/CSB5 OHCI USB Controller
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 4 ports detected
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
USB Mass Storage support registered.

So can you please tell me whether i have USb2.0 or USB1.1 or USb1.0?

I want to buy an usb external hard disk so does the UHCI or OHCI stuff matter?
Can you suggest me one or two models which will be compatible with my configuration: redhat 9, kernel 2.4.20-31.9

Brian1 · 02-20-2006, 06:52 PM

Looks like 1.1 controller, may have issues with 2.0 devices. Worst comes to worst is install a $20.00 or less 2.0 usb controller.

chinmays · 02-20-2006, 06:56 PM

Hey Brian1,

I wont be able to install anything new. As this is not my PC, it belongs to the professor for whom i work.

But is there any way to absolutely confirm that this is USB 1.1.

The thing is i have only remote access to this PC. So i this all the info i can get, i mean i cannot physically go over there.

And as i have asked u in another post can u suggest me some USb external hard disk, assuming that it is a USB 1.1

Brian1 · 02-20-2006, 07:24 PM

The above says it all

Code:

T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 4
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1

Seen many items at staples or circuit city. All look like they will work fine. Like I said never had a problem. If it does not work then return it. You have 14 to 30 days at most stores.