... 3.Adopt Taiwan original chips, design of double chips USB 1.1 to RS232 Serial port cable Accord with USB1 ... The communications transmitting rate can be reach to 1Mbps from USB port to serial port.Adopt fully gold plated standard ... shielding, strong anti-interference, stable signal transmittion.Support programmer, PLC, card punch, LED Display, PDA, numerical control machine tool, industrial instrument ...