Here are a few nice tools for gathering USB info about connected devices,
usb-devices
:
This is part of the DEFAULT PACKAGE usbutils
on 18.04 LTS. Specimen output:
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 6
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev=04.15
S: Manufacturer=Linux 4.15.0-1050-oem xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=0000:00:14.0
C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0781 ProdID=5571 Rev=01.00
S: Manufacturer=SanDisk'
S: Product=Cruzer Fit
S: SerialNumber=4C530000280331109123
C: #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=200mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
.
udevadm monitor
udevadm
is part of the DEFAULT PACKAGE udev
on 18.04 LTS.
Execute this command BEFORE you connect your USB device.
Note in the specimen output below it tells us which block device the USB flash drive loaded as:
udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
KERNEL[969.010067] add /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
KERNEL[969.010367] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
KERNEL[969.018769] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0 (scsi)
KERNEL[969.018849] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/scsi_host/host0 (scsi_host)
KERNEL[969.018934] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
KERNEL[969.019049] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
UDEV [969.024995] add /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
UDEV [969.031390] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
UDEV [969.036362] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0 (scsi)
UDEV [969.041258] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/scsi_host/host0 (scsi_host)
UDEV [969.046202] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
UDEV [969.051734] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
KERNEL[970.051706] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0 (scsi)
KERNEL[970.052068] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0 (scsi)
KERNEL[970.052215] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_disk/0:0:0:0 (scsi_disk)
KERNEL[970.052435] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0 (scsi)
KERNEL[970.052585] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_device/0:0:0:0 (scsi_device)
KERNEL[970.052774] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_generic/sg0 (scsi_generic)
KERNEL[970.052963] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/bsg/0:0:0:0 (bsg)
UDEV [970.060833] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0 (scsi)
KERNEL[970.061634] add /devices/virtual/bdi/8:0 (bdi)
UDEV [970.069006] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0 (scsi)
UDEV [970.071467] add /devices/virtual/bdi/8:0 (bdi)
UDEV [970.075852] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_disk/0:0:0:0 (scsi_disk)
KERNEL[970.079839] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/block/sda (block)
KERNEL[970.079989] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/block/sda/sda1 (block)
UDEV [970.083556] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0 (scsi)
UDEV [970.091288] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_device/0:0:0:0 (scsi_device)
UDEV [970.091755] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/scsi_generic/sg0 (scsi_generic)
UDEV [970.106807] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/bsg/0:0:0:0 (bsg)
UDEV [970.339976] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/block/sda (block)
UDEV [970.519549] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/host0/target0:0:0/0:0:0:0/block/sda/sda1 (block)