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StarTech 4 Port RS232 PCI Express Serial Card w/ Breakout Cable

Web ID: 14490

Add 4 RS232 serial ports to any PC using a single PCI Express expansion slot - 4 Port PCIe RS232 Serial Card w/ Cable ONLY WHILE STOCKS LAST!
Manufacturer Warranty: 1 Year
Manufacturer PN: PEX4S553B
GTIN: 065030842556
Manufacturer Website


The PEX4S553B 4-Port PCI Express Serial Card (with breakout cable) lets you add 4 RS232 serial ports using a single PCIe expansion slot, with an included 1-to-4 cable enabling you to add 4 serial ports to a single low profile slot.

The serial card features a native single-chip design that provides optimum reliability and speed, reducing the CPU load by up to 48% over conventional bridge-chip serial cards - a cost-effective solution for connecting legacy serial devices to PCIe-enabled computers.

The multi-port serial adapter includes both full profile and low profile/half-height brackets for compatibility with standard and small form factor computers, and is compatible with a broad range of operating systems, including Windows®, Linux, and MAC OS.

This product is a replacement for our PEX4S552B card.

Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Connector Type(s) PCI Express x1 Male
External Ports DB-9 (9 pin, D-Sub) Male
Humidity 5~85% RH
Operating Temperature 0?C to 70?C (32?F to 158?F)
Storage Temperature -40?C to 85?C (-40?F to 185?F)
Bus Type PCI Express
Card Type Low Profile (SP bracket incl.)
Chipset ID ASIX/MosChip - MCS9904CV-AA
Interface Serial
Port Style Dongle (Included)
Ports 4
Packaging Information
Shipping (Package) Weight 0.3 kg [0.7 lb]
Data Bits 5, 6, 7, 8
FIFO 256 Bytes
Max Baud Rate 230.4 Kbps
Parity Even, Odd, None, Space and Mark
Serial Protocol RS-232
Physical Characteristics
Product Height 68.5 mm [2.7 in]
Product Length 80.5 mm [3.2 in]
Product Weight 50 g [1.8 oz]
Product Width 12 mm [0.5 in]
Microsoft WHQL Certified Yes
OS Compatibility Windows? DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10
Windows Server? 2003, 2008 R2, 2012, 2012 R2, 2016
Mac OS? 10.4 to 10.10
Linux 3.5.x to 4.4.x LTS Versions Only
What's in the Box
Included in Package 4 Port PCI-Express Serial Card
  Breakout cable
  Driver CD
  Full profile bracket
  Instruction Manual