Add serial communication support to a desktop computer or Small Form Factor SFF system, using this 2-Port Serial PCI Express Card. This PCIe Serial Card is equipped with on-board DIP switches, enabling each DB9 serial port to operate in RS-232, RS-422, and/or RS-485 modes.This product is backed for 2-years and free lifetime 24/5 multi-lingual technical assistance. The 2-Port PCIe Serial Card is an ideal system upgrade for a wide range of applications e.