4-Port RS422 RS485 PCIe Controller Board - CHIPSET EXAR XR17V354 - With terminal blocks

For DESKTOP PC on PCI EXPRESS 1X slot. Allows you to add 4 RS422 / RS485 SERIAL ports to your desktop PC.
Compatibility:
Compatible with all motherboards, all serial devices. Drivers included for WINDOWS XP, Vista, Seven, 8, 10, 11, Server 2003/2008/2012, Linux 2.6.27 / 2.6.31 / 2.6.32 / 3.x.x and newer.
Features:
CHIPSET EXAR XR17V354. PCI EXPRESS 1x port (will fit 1x/2x/4x/8x/16x slot). RS485 signals: DATA+ (B) / DATA- (A) / GND. RS422 signals: T/R+ T/R- RXD+ RXD- GND. PCIe 2.0 Gen 1, dual simplex, 2.5 GB in both directions. 4 DB9 connectors with patch plate. 600W, and 15KV ESD protection. Operation: Asynchronous, point/point, point/multipoint, 2-wire (half duplex), 4-wire (full duplex). Maximum transmission distance 1.2km, Support 7/8 data bit - 1 or 2 stop bit - even/odd/mark/space/none. None, hardware and xon/xoff flow control. Load capacity up to 32 devices per port.