$ dmesg | grep USB
[ 0.193847] ACPI: bus type USB registered
[ 2.442570] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 2.442952] ehci-pci 0000:00:1d.7: new USB bus registered, assigned bus number 1
[ 2.460140] ehci-pci 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[ 2.460380] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.460385] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.460854] hub 1-0:1.0: USB hub found
[ 2.462037] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 2.462111] uhci_hcd: USB Universal Host Controller Interface driver
[ 2.462410] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[ 2.462768] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.462776] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.463559] hub 2-0:1.0: USB hub found
[ 2.464316] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[ 2.464592] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.464597] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.465068] hub 3-0:1.0: USB hub found
[ 2.465833] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[ 2.466109] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.466114] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.466558] hub 4-0:1.0: USB hub found
[ 2.467376] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
[ 2.467720] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.467726] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.468548] hub 5-0:1.0: USB hub found
[ 2.933421] usb 2-1: new low-speed USB device number 2 using uhci_hcd
[ 3.123165] usb 2-1: New USB device found, idVendor=046d, idProduct=c077
[ 3.123176] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.123181] usb 2-1: Product: USB Optical Mouse
[ 3.543421] usb 1-6: new high-speed USB device number 3 using ehci-pci
[ 3.561889] usbhid: USB HID core driver
[ 3.573258] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/0003:046D:C077.0001/input/input6
[ 3.575645] hid-generic 0003:046D:C077.0001: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1d.0-1/input0
[ 3.779890] usb 1-6: New USB device found, idVendor=13d3, idProduct=5711
[ 3.779899] usb 1-6: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 3.779904] usb 1-6: Product: USB 2.0 UVC VGA WebCam
[ 23.574970] uvcvideo: Found UVC 1.00 device USB 2.0 UVC VGA WebCam (13d3:5711)
[ 23.593791] input: USB 2.0 UVC VGA WebCam: USB2.0 as /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6:1.0/input/input10
[ 23.597290] USB Video Class driver (1.1.1)
[ 2905.899791] usb 1-3: new high-speed USB device number 4 using ehci-pci
[ 2906.048377] usb 1-3: New USB device found, idVendor=045e, idProduct=00ce
[ 2906.048387] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2908.055344] usbserial: USB Serial support registered for generic
[ 2908.061756] usbserial: USB Serial support registered for PocketPC PDA
[ 2908.067754] usb 1-3: PocketPC PDA converter now attached to ttyUSB0
[ 3164.816784] usb 1-3: USB disconnect, device number 4
[ 3164.817401] ipaq ttyUSB0: PocketPC PDA converter now disconnected from ttyUSB0
[ 3172.139760] usb 1-3: new high-speed USB device number 5 using ehci-pci
[ 3172.288351] usb 1-3: New USB device found, idVendor=045e, idProduct=00ce
[ 3172.288362] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3172.297724] usb 1-3: PocketPC PDA converter now attached to ttyUSB0
[ 3731.437406] usb 1-3: USB disconnect, device number 5
[ 3731.437956] ipaq ttyUSB0: PocketPC PDA converter now disconnected from ttyUSB0
[ 3896.953037] usb 1-3: new high-speed USB device number 6 using ehci-pci
[ 3897.101819] usb 1-3: New USB device found, idVendor=045e, idProduct=00ce
[ 3897.101830] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3897.112581] usb 1-3: PocketPC PDA converter now attached to ttyUSB0