root@lightstar:/usr/src/linux# dmesg | grep usb
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
usbmon: debugfs is not available
usb usb1: configuration #1 chosen from 1 choice
usb usb2: configuration #1 chosen from 1 choice
usb usb3: configuration #1 chosen from 1 choice
usb usb4: configuration #1 chosen from 1 choice
usb usb5: configuration #1 chosen from 1 choice
usbcore: registered new interface driver usb-storage
usbcore: registered new interface driver hiddev
usbcore: registered new interface driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
usb 1-8: new high speed USB device using ehci_hcd and address 2
usb 1-8: configuration #1 chosen from 1 choice
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
usb 1-8: USB disconnect, address 2
usb 1-8: new high speed USB device using ehci_hcd and address 3
usb 1-8: configuration #1 chosen from 1 choice
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete
usb 1-8: USB disconnect, address 3
usb 1-8: new high speed USB device using ehci_hcd and address 4
usb 1-8: configuration #1 chosen from 1 choice
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
usb-storage: device scan complete