root@debian9 ~ > dmesg|grep usb
[    2.557580] usbcore: registered new interface driver usbfs
[    2.557623] usbcore: registered new interface driver hub
[    2.563323] usbcore: registered new device driver usb
[    2.580340] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    2.580346] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.580350] usb usb1: Product: EHCI Host Controller
[    2.580354] usb usb1: Manufacturer: Linux 4.9.0-3-686-pae ehci_hcd
[    2.580358] usb usb1: SerialNumber: 0000:00:10.4
[    2.584616] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[    2.584621] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.584625] usb usb2: Product: UHCI Host Controller
[    2.584629] usb usb2: Manufacturer: Linux 4.9.0-3-686-pae uhci_hcd
[    2.584633] usb usb2: SerialNumber: 0000:00:10.0
[    2.586214] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    2.586219] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.586223] usb usb3: Product: UHCI Host Controller
[    2.586227] usb usb3: Manufacturer: Linux 4.9.0-3-686-pae uhci_hcd
[    2.586231] usb usb3: SerialNumber: 0000:00:10.1
[    2.594861] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[    2.594867] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.594871] usb usb4: Product: UHCI Host Controller
[    2.594875] usb usb4: Manufacturer: Linux 4.9.0-3-686-pae uhci_hcd
[    2.594879] usb usb4: SerialNumber: 0000:00:10.2
[    2.603310] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[    2.603318] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.603322] usb usb5: Product: UHCI Host Controller
[    2.603326] usb usb5: Manufacturer: Linux 4.9.0-3-686-pae uhci_hcd
[    2.603330] usb usb5: SerialNumber: 0000:00:10.3
[    2.908069] usb 1-3: new high-speed USB device number 2 using ehci-pci
[    3.069188] usb 1-3: New USB device found, idVendor=0403, idProduct=6011
[    3.069196] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    3.069200] usb 1-3: Product: Quad RS232-HS
[    3.069204] usb 1-3: Manufacturer: FTDI
[    3.192136] usb 1-6: new high-speed USB device number 3 using ehci-pci
[    3.340849] usb 1-6: New USB device found, idVendor=0403, idProduct=6011
[    3.340857] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    3.340861] usb 1-6: Product: Quad RS232-HS
[    3.340865] usb 1-6: Manufacturer: FTDI
[    6.810053] usbcore: registered new interface driver usbserial
[    6.810094] usbcore: registered new interface driver usbserial_generic
[    6.810129] usbserial: USB Serial support registered for generic
[    6.830105] usbcore: registered new interface driver ftdi_sio
[    6.830159] usbserial: USB Serial support registered for FTDI USB Serial Device
[    6.830481] usb 1-3: Detected FT4232H
[    6.862220] usb 1-3: FTDI USB Serial Device converter now attached to ttyUSB0
[    6.862408] usb 1-3: Detected FT4232H
[    6.867831] usb 1-3: FTDI USB Serial Device converter now attached to ttyUSB1
[    6.870764] usb 1-3: Detected FT4232H
[    6.873808] usb 1-3: FTDI USB Serial Device converter now attached to ttyUSB2
[    6.874111] usb 1-3: Detected FT4232H
[    6.880407] usb 1-3: FTDI USB Serial Device converter now attached to ttyUSB3
[    6.880602] usb 1-6: Detected FT4232H
[    6.884357] usb 1-6: FTDI USB Serial Device converter now attached to ttyUSB4
[    6.884561] usb 1-6: Detected FT4232H
[    6.890706] usb 1-6: FTDI USB Serial Device converter now attached to ttyUSB5
[    6.890898] usb 1-6: Detected FT4232H
[    6.894555] usb 1-6: FTDI USB Serial Device converter now attached to ttyUSB6
[    6.894743] usb 1-6: Detected FT4232H
[    6.896178] usb 1-6: FTDI USB Serial Device converter now attached to ttyUSB7
root@debian9 ~ >