SUNIX IPC-E2104, industrial standard PCI Express serial communication card, allows users to expand four RS-422/485 ports on PC-based system. 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 AHDC? 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 Express 1.1 BUS specifications.
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-422/485
Controller SUNIX SUN1999 (16C950 UART Compatible)
Bus PCI Express one lane (x1)
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 921.6 Kbps
Data bit 5,6,7,8
Stop bit 1,1.5,2
Parity None, Even, Odd, Space, Mark
Flow Control Xon/Xoff (software)
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 DB44 Female

DRIVER SUPPORT
Microsoft Client Windows XP/Vista/7 (X86/X64)
Microsoft Server Windows 2000/2003/2008 (X86/X64)
Microsoft Embedded Windows CE5.0/6.0/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 99 x 86 mm
Bracket Standard 121 mm