Description
Description
This PCIe RS422/RS485 Multi-I/O card uses the high-performance EXAR 17V352 chipset. It offers dual or quad serial ports with enhanced features including large 256-byte FIFOs, programmable baud rates, and automatic RS485 direction control. With strong EMI protection and long-range support (up to 1.2km), it is ideal for industrial automation, remote access, and POS systems.
Specifications
- Chipset: EXAR 17V352
- PCIe Gen 2.0 x1 (2.5Gbps)
- Supports x1, x2, x4, x8, x16 slots
- RS422/RS485 signals with surge & ESD protection
- Transmission: 300bps–921600bps
- Protection: 15kV ESD, 600W surge, 2500Vrms isolation
- Transmission Range: up to 1.2km
- UART Support: 7/8 data bits, 1/2 stop bits, parity control
- Flow control: hardware/Xon-Xoff/none
- Supports TSN, sleep mode, wake-up indicator
Package Contents
- 1 x PCIe RS422/RS485 Multi-I/O Card
- 1 x User Manual
- 1 x CD Driver
- 1 x DB9 to 5-pin Converter
- 1 x Serial 44-pin to 9-pin Cable
System Requirements
- OS: Windows 2000/XP/7/8/10 (32/64-bit), Linux 2.6+
- PCIe Slot: x1/x2/x4/x8/x16
Applications
- POS Systems
- Remote Access Servers
- Storage Network Management
- Factory Automation
Driver Installation
- Insert Driver CD and browse to D:\XR17V35X
- Select appropriate folder (e.g., XR17V352 for 2 ports)
- Follow on-screen instructions
Verification
After installation, use Device Manager to verify under “Multi-Port Serial Adapters”.



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