User manual
9 
Seriell RS-422/485 PCIe Board  English 
Thank you for purchasing this 1-Port RS422/485 Serial PCI-Express Card. It is a uni-
versal add on card that connects to a PC or server via the PCIe Bus, providing high-
speed serial connectivity. The serial ports are fully compatible with RS422/485 stand-
ard by the bundled Serial COM port drivers. It can be set at any mode (RS485 2-wire, 
RS485 4-wire and RS422) for different type connections. 
Feature: 
•  Fully Compliant with PCI Express Base Specifications, Revision 1.1 
•  128-byte On-Chip FIFO and Arbitrary Trigger Levels and Interrupts, Automatic 
Hardware/Software Flow Control 
•  Up to 921.6Kbps Baud Rate 
•  Supports 5,6,7,8,9-bits Data Framing 
•  Supports 1, 1.5, 2 Stop Bits 
•  Support Echo Mode 
•  15KV ESD Surge Protection and 2500Vrms Optical Isolation Protection 
(only for EX-45352IS) 
•  Support Win98, ME, 2000, XP(32/64bit),Vista(32/64bit), Win7(32/64bit) 
WinCE and Linux 
1. Description 
2. Packet Content 
Before you install the RS-422/485 PCIe card in your PC, check the contents of delivery: 
•  1 x RS-422/485 Serial PCI card 
•  1 x Octopus cable with 2 x 9 pin male connector 
•  1 x LowProfile bracket for small computer case 
•  1 x Driver CD 
•  1 x User Manual 
•  Optional 5 Pin Terminal Block (EX-47999) 










