Features: Elevates your desktop's connectivity with the RS232 PCI Card, a solution that add 1parallel and 4serial port to meet all your communication needs. Engineered with MCS9865 chip, this quality PCB interfaces card ensures rapid data transfer rates. Suitable for IT professionals, system administrators, and technical enthusiasts. Transform your work room into hubs of efficiency; connect printers, scanners, and control devices seamlessly in environment like server room, production lines, and research lab. This PCI expansion card is choice for expanding your desktop's capabilities. Specifications: Component:PCB Size:Approx.67x45mm/2.63x1.77inch Model:IO M2F384 4S1P Chip:WCH384 Slots:M.2(B+M Key) Output:4port RS232 Serial+Single Parallel Port; Package Includes: 1set M.2 M+B Key to 4X RS232 Serial Adapter Card note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.