Is that serial number something you have to program? I am using an FT232RL on one
of my boards and typing dmesg gets
usb 2-2: new full speed USB device using ohci_hcd and address 8
usb 2-2: configuration #1 chosen from 1 choice
ftdi_sio 2-2:1.0: FTDI USB Serial Device converter detected
drivers/usb/serial/ftdi_sio.c: Detected FT232BM
usb 2-2: FTDI USB Serial Device converter now attached to ttyUSB2
(* jcl *)