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Linux/USB - Revision history
2026-06-26T10:43:54Z
Revision history for this page on the wiki
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Kenneth: /* List USB Devices */
2017-07-04T05:17:30Z
<p><span dir="auto"><span class="autocomment">List USB Devices</span></span></p>
<p><b>New page</b></p><div>== USB 3.0 ==<br />
<br />
"The Linux kernel has supported USB 3.0 since version 2.6.31, which was released in September 2009." [http://en.wikipedia.org/wiki/USB_3.0] [http://askubuntu.com/questions/12139/does-ubuntu-support-usb-3-0]<br />
<br />
== List USB Devices ==<br />
<br />
$ lsusb<br />
<br />
$ usb-devices<br />
<br />
listusb: [https://unix.stackexchange.com/questions/144029/command-to-determine-ports-of-a-device-like-dev-ttyusb0]<br />
<pre><br />
#!/bin/bash<br />
for sysdevpath in $(find /sys/bus/usb/devices/usb*/ -name dev); do<br />
syspath="${sysdevpath%/dev}"<br />
devname="$(udevadm info -q name -p $syspath)"<br />
[[ "$devname" == "bus/"* ]] && continue<br />
eval "$(udevadm info -q property --export -p $syspath)"<br />
[[ -z "$ID_SERIAL" ]] && continue<br />
echo "/dev/$devname - $ID_SERIAL"<br />
done<br />
</pre><br />
<br />
== Linux USB Discovery ==<br />
<br />
USB 3.0 HDD: (dmesg)<br />
<pre><br />
usb 9-2: new SuperSpeed USB device number 6 using xhci_hcd<br />
usb 9-2: New USB device found, idVendor=0480, idProduct=d000<br />
usb 9-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1<br />
usb 9-2: Product: External USB 3.0<br />
usb 9-2: Manufacturer: TOSHIBA<br />
usb 9-2: SerialNumber: 2013122801534E<br />
usb 9-2: configuration #1 chosen from 1 choice<br />
Initializing USB Mass Storage driver...<br />
scsi6 : SCSI emulation for USB Mass Storage devices<br />
usbcore: registered new interface driver usb-storage<br />
USB Mass Storage support registered.<br />
scsi 6:0:0:0: Direct-Access TOSHIBA External USB 3.0 0 PQ: 0 ANSI: 6<br />
sd 6:0:0:0: Attached scsi generic sg6 type 0<br />
sd 6:0:0:0: [sdg] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)<br />
sd 6:0:0:0: [sdg] Write Protect is off<br />
sd 6:0:0:0: [sdg] Assuming drive cache: write through<br />
sd 6:0:0:0: [sdg] Assuming drive cache: write through<br />
sdg: sdg1<br />
sd 6:0:0:0: [sdg] Assuming drive cache: write through<br />
sd 6:0:0:0: [sdg] Attached SCSI disk<br />
</pre><br />
<br />
USB 2.0 HDD: (dmesg)<br />
<pre><br />
usb 1-3: new high speed USB device number 5 using ehci_hcd<br />
usb 1-3: New USB device found, idVendor=0bc2, idProduct=3001<br />
usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3<br />
usb 1-3: Product: FreeAgent<br />
usb 1-3: Manufacturer: Seagate<br />
usb 1-3: SerialNumber: 2GEX3WBF<br />
usb 1-3: configuration #1 chosen from 1 choice<br />
scsi7 : SCSI emulation for USB Mass Storage devices<br />
scsi 7:0:0:0: Direct-Access Seagate FreeAgent 102D PQ: 0 ANSI: 4<br />
sd 7:0:0:0: Attached scsi generic sg7 type 0<br />
sd 7:0:0:0: [sdh] 2930277168 512-byte logical blocks: (1.50 TB/1.36 TiB)<br />
sd 7:0:0:0: [sdh] Write Protect is off<br />
sd 7:0:0:0: [sdh] Assuming drive cache: write through<br />
sd 7:0:0:0: [sdh] Assuming drive cache: write through<br />
sdh: sdh1<br />
sd 7:0:0:0: [sdh] Assuming drive cache: write through<br />
sd 7:0:0:0: [sdh] Attached SCSI disk<br />
</pre><br />
<br />
<br />
usb-devices:<br />
<pre><br />
--------------- USB 3.0 DEVICE & CONTROLLER ---------------<br />
T: Bus=09 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 6 Spd=5000 MxCh= 0<br />
D: Ver= 3.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs= 1<br />
P: Vendor=0480 ProdID=d000 Rev=01.00<br />
S: Manufacturer=TOSHIBA<br />
S: Product=External USB 3.0<br />
S: SerialNumber=2013122801534E<br />
C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=36mA<br />
I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage<br />
<br />
T: Bus=09 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 2<br />
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1<br />
P: Vendor=1d6b ProdID=0003 Rev=02.06<br />
S: Manufacturer=Linux 2.6.32-431.23.3.el6.x86_64 xhci_hcd<br />
S: Product=xHCI Host Controller<br />
S: SerialNumber=0000:03:00.0<br />
C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA<br />
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub<br />
<br />
<br />
--------------- USB 2.0 DEVICE & CONTROLLER ---------------<br />
T: Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 5 Spd=480 MxCh= 0<br />
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1<br />
P: Vendor=0bc2 ProdID=3001 Rev=00.00<br />
S: Manufacturer=Seagate<br />
S: Product=FreeAgent<br />
S: SerialNumber=2GEX3WBF<br />
C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA<br />
I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage<br />
<br />
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 5<br />
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1<br />
P: Vendor=1d6b ProdID=0002 Rev=02.06<br />
S: Manufacturer=Linux 2.6.32-431.23.3.el6.x86_64 ehci_hcd<br />
S: Product=EHCI Host Controller<br />
S: SerialNumber=0000:00:12.2<br />
C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA<br />
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub<br />
</pre></div>
Kenneth