
StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with
by StarTech.com
£93.40from 2 retailers
MPNPEX4S553
Prices updated 19 Mar 2026
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Product Description
Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slotThe 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.The StarTech.com Advantage- Native single-chip. single lane PCI Express chipset delivers true PCIe performance. up to 48% more efficient than bridge chip designs- Standard and low profile/half-height brackets included to ensure fitment in any system
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