This 2 port High Speed Serial RS-422/485 PCI Express (PCIe) Card supports Standard and Low Profile Bracket, with 2KV Optical Isolation and 600W Surge Protection.

Expands 2 com ports for your system
High Speed Baud Rate up to 921.6Kbps
Design to meet PCI Express 2.0 Gen 1 compliant
Supports PCI Express x1, x2, x4, x8, and x16 Lane
Max 10 device connectivity for 4 Wire RS-485(RS-422 Multi-Drop) mode
Max 32 device connectivity for 2 Wire RS-485 mode
Built-in 15KV ESD protection
2KV Optical Isolation
600W Surge protection
Supports Industrial Specification
256 byte FIFOs
Supports Microsoft Windows, Linux, and QNX drivers

Hardware
Controller : 16C550 UART Compatible register Set
Bus : PCI Express x 1
Connector : DB25 Female

Interface serial
Number of ports : 2 ports
Serial Standard : RS-422(Point to Point mode), RS-485(2 Wire RS-485 mode), 4 Wire RS-485(Multi-Drop RS-422 mode)
IRQ and I/O Address : Assigned by System

Serial Line Protection
ESD Protection : 15KV ESD Protection for all signals
Optical Isolation Protection : 2KV Opto Isolator Protection for each port
Surge Protection : 600W Surge Protection for RS-422/485 signals

Performance
Baud rate : up to 921.6 Kbps
FIFOs : 256 byte

Serial Communication Parameters
Data Bits : 5, 6, 7, 8
Stop Bits : 1, 1.5, 2
Parity : None, Even, Odd, Space, Mark

Serial Signals
RS422 : TxD+, TxD- RxD+, RxD-, GND
2 Wire RS485 : Data+, Data-, GND
4 Wire RS485 : TxD+, TxD-, RxD+, RxD-, GND

Driver Support
Windows : XP, 2003, Vista, 2008, Win 7, Win 8/8.1, Win 10
Linux : 2.6
QNX : 6.0

Physical Characteristics
Bracket : Standard and Low Profile Bracket
Bracket Space : 1

Environmental Limits
Operating Temperature : -30 ~ 75°C
Storage Temperature : -40 ~ 85°C
Ambient Relative Humidity : 5 ~ 95% Non-Condensing
Standards and Certifications : CE, FCC

Package Content
1 x 2 port RS-422/485 PCI Express Optial Isoaltion Card
1 x DB25 pin to 2 x DB9M Cable 30cm
2 x DB9F to 5 pin Terminal Block 600W Surge Adapter
1 x Low Profile Bracket
1 x Quick Installation Guide
1 x Driver CD

DB9M Pin Assignments

DB9F to 5pin Terminal Block Surge Adapter Pins