support motherboard with serial port : Internal USB 2.0 to dual port RS232(DB9) bus powered Adapter,PL2303GC
Two RS232 portsUtilizes motherboard USB 2.0 (9 pin) portAllows jumper switching for 5V power supplySupports RS232 hardware / software flow control1024-byte bi-directional data FIFO buffers for faster data throughput.