PL2303HX 4 Pin USB-TTL Serial Converter Cable

 

PL2303 HX USB-TTL serial converter cable is a serial converter that allows you to use the USB 2.0 port in the TTL interface.  ; It allows any circuit with a TTL interface to communicate with the computer via the USB port. Since the logic voltage level and supply voltage are 5V, it can be used easily with many systems.