Startech 4-Port PCI Express RS232 Serial Adapter Card with 16550 UART

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.

Connector(s) Connector Type(s) PCI Express x1 Male External Ports DB-9 (9 pin, D-Sub) Male Environmental Humidity 5~85% RH Operating Temperature 0?C to 50?C (32?F to 122?F) Storage Temperature -20?C to 60?C (4?F to 140?F) Hardware Bus Type PCI Express Card Type Standard Profile (LP bracket incl.) Chipset ID ASIX/MosChip - MCS9904CV-AA Interface Serial Port Style Integrated on Card Ports 4 Packaging Information Shipping (Package) Weight 0.2 kg [0.5 lb] Performance Data Bits 5, 6, 7, 8 FIFO 256 bytes Max Baud Rate 128 Kbps MTBF 26,280 Hours Parity 5, 6, 7, 8 Serial Protocol RS-232 Physical Characteristics Color Green Product Height 19 mm [0.7 in] Product Length 120 mm [4.7 in] Product Weight 80 g [2.8 oz] Product Width 130 mm [5.1 in] Software 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 RS-232 Serial Card Bracket with 2 DB9 male ports Driver CD Instruction Manual Low Profile Brackets