Add a RS-232 serial port to your standard or small form factor computer through a PCI Express expansion slotThe PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection.The card is constructed using a native single chip design that lets you 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 PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows® and Linux Kernel 2.6.11 to 4.11.x, and ships with a low profile/half-height bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).This product is a replacement for our PEX1S552LP card.Backed by a StarTech.com 2-year warranty and free lifetime technical support.The StarTech.com Advantage

Technical details
Sustainability certificates	CE, RoHS
System requirements
Windows operating systems supported	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 11, Windows 11 x64, Windows 2000, Windows 2000 Professional, 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 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 ME, 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 XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
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
Linux operating systems supported	Y
Server operating systems supported	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Other operating systems supported	DOS, Windows XP Embedded
Ports & interfaces
Host interface	PCIe
Output interface	Serial
Expansion card standard	PCI 1.1
Serial ports quantity	1
Serial interface type	RS-232
Peripheral (Molex) power connectors (4-pin)	1
Weight & dimensions
Width	80 mm
Depth	105 mm
Height	20 mm
Weight	44 g
Operational conditions
Operating temperature (T-T)	-10 - 80 °C
Storage temperature (T-T)	-20 - 100 °C
Operating relative humidity (H-H)	5 - 85%
Packaging data
Drivers included	Y
Manual	Y
Package width	143 mm
Package depth	174 mm
Package height	32 mm
Package weight	130 g
Other features
Compatible operating systems	Linux, Mac OS 10.4.x
Design
Internal	Y
Product colour	Green
Features
Chipset	ASIX - MCS9922CV-AA
Baud rate	460.8 Kbit/s
FIFO (First In, First Out)	128 B
Logistics data
Harmonized System (HS) code	84733020
Products per master (outer) case	75 pc(s)
Master (outer) case width	365 mm
Master (outer) case length	692 mm
Master (outer) case height	315 mm