H052 PCI to 2 Ports COM 9 Pin Serial Series RS232 Expansion Card for Computer LaptopOOTDTY  Features: 100% brand new and high qualityYou can manually change the port number of additional serial port card. Consistent with PCI Rev2.1 Agreement. Consistent with standard input and output of 16C550 UART with 16 byte transmit-receive FIFO. Transfer rate up to 1 Mbytes / sec. Two DB9 serial port connectors.Specification: Material:PCBNet Weight:120gPackage Includes: 1 x 2 Ports PCI to COM 9-pin Serial Port RS232 Card Adapternote: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.