❀This PCIe to 4 port RS232 card features the MCS9904 chip, delivering data transmission for industrial and commercial application. ❀Equipped with four 9pin interfaces, this expansion card supports simultaneous connection to multiple devices like engraving machines, , and printers. ❀Designed for PCIe slots with backward compatibility, ensuring seamless integration with various desktop and server systems. ❀Ideal for industrial automation equipment, and security systems, providing efficient port expansion . ❀Easy to set up with included brackets, this PCIe card easy installation for both standard and low profile computer cases.