36inch FTDI USB to Serial Cable for MA PC Linux with Windows Certified Drivers by GearMO. $17.95. FTDI USB to Serial Cable 36inch Long is the easiest way to connect serial devices to the USB port on your laptop or desktop computer. This USB to Serial Converter operates as a bridge between one USB port and standard RS-232 Serial port. You just easily hook the cable into PC or Hub's port, and it can connect any RS-232 devices, such as PDA, scanner, printers, etc.