mahlzeit:/# dmesg | grep USB
ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ohci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
ohci_hcd 0000:00:02.3: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
USB Universal Host Controller Interface driver v3.0
usb 1-1: new low speed USB device using ohci_hcd and address 2