Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slotThe PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards.The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows® and Linux Kernel 2.6.11 to 4.11.x, and MAC OS 10.4 and above.Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case.This product is a replacement for our PEX2S552 card.Backed by a StarTech.com 2-year warranty and free lifetime technical support.The StarTech.com Advantage

Specification

Design
Product colour	Green
Internal	Yes
Features
FIFO (First In, First Out)	128 B
Baud rate	460.8 Kbit/s
Chipset	ASIX - MCS9922CV-AA
Logistics data
Harmonized System (HS) code	84733020
Products per master (outer) case	75 pc(s)
Master (outer) case width	355 mm
Master (outer) case length	690 mm
Master (outer) case height	310 mm
Operational conditions
Operating relative humidity (H-H)	5 - 85%
Storage temperature (T-T)	-20 - 100 °C
Operating temperature (T-T)	-10 - 80 °C
Packaging data
Package width	145 mm
Package depth	175 mm
Package height	32 mm
Package weight	151 g
Drivers included	Yes
Manual	Yes
Ports & interfaces
Peripheral (Molex) power connectors (4-pin)	1
Serial interface type	RS-232
Serial ports quantity	2
Expansion card standard	PCIe 1.0
Output interface	Serial
Host interface	PCIe
System requirements
Other operating systems supported	DOS, Windows Embedded POSReady 2009, Windows Embedded Standard 2009, Windows XP Embedded
Server operating systems supported	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Linux operating systems supported	Yes
Mac operating systems supported	Mac OS X 10.10 Yosemite, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Windows operating systems supported	Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 11, Windows 11 x64, Windows 2000, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64, Windows 95, Windows 98SE, Windows CE, Windows Vista, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows Vista x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Technical details
Sustainability certificates	CE, RoHS
Sustainability compliance	Yes
Weight & dimensions
Weight	61 g
Height	20 mm
Depth	105 mm
Width	120 mm

Features

Internal

Host interface: PCIe

Output interface: Serial

Green