The PCI2S4851050 2-Port PCI Serial Adapter Card (RS422/RS485) with 161050 UART adds two DB9 RS422/RS485 serial ports, using a single PCI expansion slot. The PCI serial card offers a high performance 16C1050 UART and supports both 2-wire and 4-wire RS485 modes. The card delivers an efficient single-chip design and a large 256-byte transit/receive FIFO buffer that work together to provide high-speed serial communication while reducing the overall load on the system CPU. With the included standard and low profile/half-height brackets, this PCI serial expansion card suits a broad range of system form factors, and is a perfect addition for connecting RS422/485 serial devices to a host computer. For added versatility, the RS422/RS485 adapter is able to accommodate 3.3 or 5V PCI/PCI-X slots. Backed by a StarTech.com lifetime warranty and free lifetime technical support. The StarTech.com Advantage - Much larger FIFO buffer than standard serial cards (256 byte vs. 32 or 64 byte) minimizes data loss and optimizes host efficiency - A simple jumper change allows you to select either RS422 or RS485 serial interface formats specific to your application - Standard and low profile/half-height bracket included, ensuring easy installation into almost any system

Technical details
Sustainability certificates	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 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 x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64
Server operating systems supported	Windows 2000 Server, Windows Server 2003, Windows Server 2008 R2, Windows Server 2012
Ports & interfaces
Host interface	PCI/PCI-X
Output interface	Serial
Serial ports quantity	2
Serial interface type	RS-422, RS-485
Weight & dimensions
Width	15 mm
Depth	120 mm
Height	45 mm
Weight	58 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	145 mm
Package depth	175 mm
Package height	32 mm
Package weight	152 g
Other features
Data transfer rate	0.128 Mbit/s
Compatible operating systems	Windows 7 (32/64bit)/ Vista(32/64)/ XP(32/64), Windows Server 2008 R2/ 2003(32/64)/ 2000, Linux 2.4.x/ 2.6.x
Design
Internal	Y
Certification	CE, FCC
Features
Chipset	SystemBase -SB16C1052PCI
Baud rate	128 Kbit/s
FIFO (First In, First Out)	256 B
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2
Flow control support	Y
Logistics data
Harmonized System (HS) code	84733020