StarTech.com PEX4S553 - 4-Port PCIe RS232 16550 PEX4S553 Serial Card Adapter

The PEX4S553 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART lets you add 4 RS232 (DB9) serial ports using a single PCI Express expansion slot.Based on a native single-chip design this 4-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe) while reducing the load applied to the CPU by as much as 48% over conventional bridge-chip serial cards.The RS232 Serial Adapter Card includes 4 half-height/low- profile brackets allowing the card to be installed into almost any PC case regardless of form factor.Backed by a StarTech.com Lifetime warranty and free lifetime technical support.