USB to Serial provides two RS232 serial ports. Up to 921,600 data transfer rates and the 128 byte transmit and 384 byte receive FIFOS, coupled with 1Mbit line drivers deliver uncompromising performance on your laptop/PC.USB to serial is the quick low cost way to connect your computer to a serial comms enabled device. Boost software gives industry leading functionality and compatibility.This product does away with traditional issues with USB technology so you can buy with confidence!