PCI Express (PCIe) Controller Board// 4 Ports RS422 RS485// CHIPSET EXAR XR17V354 - Windows XP/Vista/Seven/8/10, Windows Server 2003/2008/2012, Linux

Features
PCIe 2.0 Gen 1 compliant
x1 Link, dual simplex, 2.5Gbps in each direction
Supports x1, x2, x4, x8, x16 (lane) PCI Express Bus connector keys.
RS485 signals: DATA+ (B), DATA- (A), GND
RS422 signal: T/R+, T/R-, RXD+, RXD-, GND
600W surge protection, 15 KV ESD protection for all serial ports
Working mode: asynchronous working、point-to-point or point-to-multipoint 2 wires (half duplex) 4 wires (full duplex)
Transmission distance: RS-485/422 port:1.2km (300bps-921600bps)
Sleep mode with wake-up Indicator
Transmission media: twisted-pair cable or shielded cable
Direction control: Adopt the technology which automatically controls the data-flow direction、automatically distinguish and control the data-transmission direction;
UART interface support for 7 or 8 data bits,1 or 2 stop bits and even/odd/mark/space/none
Flow control none,hardware and xon/xoff
Load capability; Support point-to-multipoint transmission. Each converter can connect 32 RS-422 or RS-485 interface equipment
Extended operating temperature range;  -40 to 85⁰C

Applications
Next generation Point-of-Sale Systems
Remote Access Servers
Storage Network Management
Factory Automation and Process Control

System Requirements
Windows® Server 2003, 2008, 2012
Windows® XP, Vista, 7, 8, 10
Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer
PCI Express-enabled system with an available PCI Express slot