$ dmesg | grep -i usb

$ dmesg | grep -i usb
[    0.496911] ACPI: bus type USB registered
[    0.496924] usbcore: registered new interface driver usbfs
[    0.496930] usbcore: registered new interface driver hub
[    0.496950] usbcore: registered new device driver usb
[    1.314773] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.314892] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
[    1.329546] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[    1.329588] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    1.329590] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.329592] usb usb1: Product: EHCI Host Controller
[    1.329593] usb usb1: Manufacturer: Linux 3.13.0-24-generic ehci_hcd
[    1.329595] usb usb1: SerialNumber: 0000:00:1a.0
[    1.329715] hub 1-0:1.0: USB hub found
[    1.329897] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    1.345564] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[    1.345597] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[    1.345599] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.345600] usb usb2: Product: EHCI Host Controller
[    1.345602] usb usb2: Manufacturer: Linux 3.13.0-24-generic ehci_hcd
[    1.345604] usb usb2: SerialNumber: 0000:00:1d.0
[    1.345719] hub 2-0:1.0: USB hub found
[    1.345805] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.345818] uhci_hcd: USB Universal Host Controller Interface driver
[    1.345892] xhci_hcd 0000:03:00.0: new USB bus registered, assigned bus number 3
[    1.346256] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002
[    1.346258] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.346260] usb usb3: Product: xHCI Host Controller
[    1.346262] usb usb3: Manufacturer: Linux 3.13.0-24-generic xhci_hcd
[    1.346263] usb usb3: SerialNumber: 0000:03:00.0
[    1.346368] hub 3-0:1.0: USB hub found
[    1.346440] xhci_hcd 0000:03:00.0: new USB bus registered, assigned bus number 4
[    1.346480] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003
[    1.346482] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.346483] usb usb4: Product: xHCI Host Controller
[    1.346485] usb usb4: Manufacturer: Linux 3.13.0-24-generic xhci_hcd
[    1.346486] usb usb4: SerialNumber: 0000:03:00.0
[    1.346592] hub 4-0:1.0: USB hub found
[    1.641853] usb 1-1: new high-speed USB device number 2 using ehci-pci
[    1.774469] usb 1-1: New USB device found, idVendor=8087, idProduct=0024
[    1.774474] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    1.774950] hub 1-1:1.0: USB hub found
[    1.886227] usb 2-1: new high-speed USB device number 2 using ehci-pci
[    2.018639] usb 2-1: New USB device found, idVendor=8087, idProduct=0024
[    2.018644] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    2.019035] hub 2-1:1.0: USB hub found
[    2.290474] usb 2-1.1: new low-speed USB device number 3 using ehci-pci
[    2.388608] usb 2-1.1: New USB device found, idVendor=1d57, idProduct=001d
[    2.388619] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    2.388625] usb 2-1.1: Product: HID compliant-mouse
[    2.388630] usb 2-1.1: Manufacturer: HID compliant-mouse
[    2.395600] usbcore: registered new interface driver usbhid
[    2.395602] usbhid: USB HID core driver
[    2.396722] input: HID compliant-mouse HID compliant-mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input12
[    2.396796] hid-generic 0003:1D57:001D.0001: input,hidraw0: USB HID v1.10 Mouse [HID compliant-mouse HID compliant-mouse] on usb-0000:00:1d.0-1.1/input0
per@per-kubuntu:~$