Comment 9 for bug 874181

I think it's usb 2. I'm not a Linux developer, so below is part of the kernel log showing the problem.

Oct 21 19:59:29 hpb-Latitude-2120 kernel: [ 2340.040136] usb 2-1: new full speed
USB device number 12 using uhci_hcd
Oct 21 19:59:29 hpb-Latitude-2120 kernel: [ 2340.193734] hub 2-1:1.0: USB hub
found
Oct 21 19:59:29 hpb-Latitude-2120 kernel: [ 2340.195488] hub 2-1:1.0: 2 ports
detected
Oct 21 19:59:29 hpb-Latitude-2120 kernel: [ 2340.489457] usb 2-1.1: new full
speed USB device number 13 using uhci_hcd
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2340.826696] input: Burr-Brown from
TI USB Audio CODEC as
/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.3/input/input18
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2340.827062] generic-usb
0003:08BB:2901.0009: input,hidraw2: USB HID v1.00 Device [Burr-Brown from TI
USB Audio CODEC ] on usb-0000:00:1d.0-1.1/input3
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2340.901453] usb 2-1.2: new full
speed USB device number 14 using uhci_hcd
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2341.047932] cp210x 2-1.2:1.0:
cp210x converter detected
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2341.121456] usb 2-1.2: reset full
speed USB device number 14 using uhci_hcd
Oct 21 19:59:30 hpb-Latitude-2120 kernel: [ 2341.246793] usb 2-1.2: cp210x
converter now attached to ttyUSB0
Oct 21 19:59:32 hpb-Latitude-2120 kernel: [ 2342.858163] usb 2-1.2: usbfs:
interface 0 claimed by cp210x while 'brltty' sets config #1
Oct 21 19:59:32 hpb-Latitude-2120 kernel: [ 2342.861068] cp210x ttyUSB0: cp210x
converter now disconnected from ttyUSB0
Oct 21 19:59:32 hpb-Latitude-2120 kernel: [ 2342.861134] cp210x 2-1.2:1.0:
device disconnected