Connector Type(s): 1 - PCI Express x1, Internal Ports: 1 - LP4 (4 pin; Large Drive Power), External Ports: 2 - DB-9 (9 pin, D-Sub), Ports: 2, Card Type: Standard Profile (LP bracket incl.), Port Style: Integrated on Card, Chipset ID: Asix AX99100, Serial Protocol: RS-232, Color: Green, Material: Steel. This multiport PCI Express RS232 serial adapter card lets you add two RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot, as if they were native serial ports. The dual port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modem