Startech.com PEX4S953

4 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 4x DB9 ports w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer; Upgraded version of our popular Serial card PEX4S952 OPTIONAL CONFIGURABLE POWER: PCIe multiport serial card provides 12v, 5v, or none through pin 9 w/up to 2A to... moretal; Each of the 4 ports are individually configurable; DB44 to 4x DB9 breakout cable incl STANDARD PROFILE & LOW PROFILE BRACKET: PCI Express RS232 s

What you're looking at is a high-quality 4 Port Native PCIe RS232 Serial Adapter Card with 16950 UART. This reliable and durable device, based on the ASIX AX99100 chipset, provides four DB9 ports with bi-directional RS232 speeds reaching up to 921.6Kbps per port. It's an efficient solution for those seeking to connect multiple serial devices, such... moreas printers, scanners, and other peripherals, to their computer.This user-friendly adapter card is an upgraded version of our popular Serial card PEX4S952, now offering an increased 256-byte FIFO buffer for smoother data transmission. It's designed to connect seamlessly to your computer's motherboard via a PCIe slot, providing a high-speed USB 2.0