SUNIX IPC-B2104, industrial standard PCI/104 serial communication card, allows users to expand four RS-422/485 ports on PC-based system.
It is compatible with PCI/104 BUS specifications, allowing it to be installed in virtually any embedded PC-based systems.
Each serial port achieves data rates up to 921.6 Kbps and utilizes 16C950 UART with an on-chip 128-bytes hardware FIFO buffer for reliable, high-speed serial I/O.
With SUNIX patented Auto-Switching RS-422/485 and RS-485 AHDCTM technology, user can easily manage different serial interfaces selection and RS-485 signal direction control. Under RS-485 mode, the board can connect up to 31 daisy-chained RS-485 devices within a range of 1.2 km. SUNIX serial board supports a wide variety of operating systems, including Windows, Linux, DOS, and UNIX.
It is the best serial communicating solution for industrial and harsh environment applications.

Features
Expands 4 independent RS-422/485 serial ports with communication speeds up to 921.6Kbps
High reliability SUN1999 16C950 compatible UART controller on-board.
Compliance with PCI/104 specifications
Ideal for embedded computing applications
RS-422/485 auto detect and switching technology?jumper and software free
AHDC/CSTM technology for collision free communication
Ultra low power consumption design for Green Environment.
Built-in 15KV ESD protection for all serial signals meets IEC1000-4-2 standard.
Plug-n-Play, I/O address and IRQ assigned by BIOS
Certified by CE, FCC, RoHS, and Microsoft WQHL approval
Support Microsoft Windows, Linux, and DOS

Specifications
Interface RS-232
Controller SUNIX SUN1999 (16C950 UART Compatible)
Bus PCI / 104
No. of Port 4-port
IRQ & IO Assigned by System
FIFO 128 byte (Hardware)
Signal RS-422: TxD+, TxD-, RxD+, RxD-, GND
4-wire RS-485: TxD+, TxD-, RxD+, RxD-, GND
2-wire RS-485: Data+, Data-, GND
Baud rate 50 bps to 921.6Kbps
Data bit 5,6,7,8
Stop bit 1,1.5,2
Parity None, Even, Odd, Space, Mark
Flow Control None, Xon/Xoff, RTS/CTS
Protection ?15KV ESD protection for each signal Human Body Model (HBM)
?15KV IEC1000-4-2 Air Gap Discharge
?8KV IEC1000-4-2 Contact Discharge
PCB connector 5 x 2 Pin Header
Cable Connector 5 x 2 Pin Header to DB9 Male

Driver Support
Microsoft Client Windows XP/Vista/7 (X86/X64)
Microsoft Server Windows 2000/2003/2008 (X86/X64)
Microsoft Embedded Windows XP Embedded/POS Ready 2009/Embedded System 2009
Linux Linux 2.4.x / 2.6.x
DOS DOS

Environment
Operation Temperature 0 to 70°C (32 to 158°F)
Operation Humidity 5 to 95% RH
Storage Temperature -20 to 85°C (-4 to 185°F)
Dimension
PCB Dimension 96.5 x 90 mm