StarTech 4 Port RS232 PCI Express Serial Card w/ Breakout Cable - Computer Alliance
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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 PN: PEX4S553B
GTIN: 65030842556
Warranty: Lifetime
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 lifetime warranty and free lifetime technical support.

Connector Type(s)PCI Express x1 Male
External PortsDB-9 (9 pin; D-Sub) Male
Humidity5~85% RH
Operating Temperature0?C to 70?C (32?F to 158?F)
Storage Temperature-40?C to 85?C (-40?F to 185?F)
Bus TypePCI Express
Card TypeLow Profile (SP bracket incl.)
Chipset IDASIX/MosChip - MCS9904CV-AA
Port StyleDongle (Included)
Packaging Information
Shipping (Package) Weight0.3 kg [0.7 lb]
Data Bits5, 6, 7, 8
FIFO256 Bytes
Max Baud Rate230.4 Kbps
ParityEven, Odd, None, Space and Mark
Serial ProtocolRS-232
Physical Characteristics
Product Height68.5 mm [2.7 in]
Product Length80.5 mm [3.2 in]
Product Weight50 g [1.8 oz]
Product Width12 mm [0.5 in]
Microsoft WHQL CertifiedYes
OS CompatibilityWindows? 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
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 Package4 Port PCI-Express Serial Card
Breakout cable
Driver CD
Full profile bracket
Instruction Manual