Try a driver checking tool such as DriverIdentifier Software. As there are many drivers having the same name, we suggest you to try the Driver Tool, otherwise you can try one by on the list of available driver below. Please scroll down to find a latest utilities and drivers for your FT231X USB UART driver. FT231X USB TO FULL HANDSHAKE UART IC Datasheet Version 1.2 Document No.: FT000565 Clearance No. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow. (USB Drivers + DLL S/W Interface) x Windows 8 32,64 -bit. In 2011 we published a small PCB, FT232R USB/Serial Bridge/BOB (110553) with a USB-UART IC from FTDI, the FT232RQ. Here we present its successor with a cheaper version, a FT231XQ. But there are some other changes too. Normal pin headers can be used now. The (optional) two connectors on the long sides of the PCB are placed a little closer together, row distance 12.7 mm instead of 15.24 mm.