4-port RS-232 PCI communication card

Product Description

SUNIX SER5056A+L, Universal PCI serial communication board, allows users to add or expand four RS-232 ports on PC-based system. The card is compatible with both 64 / 32-bit PCI architecture supporting 3.3 and 5V Bus, allowing it to be installed in virtually any PC-based systems. SUNIX SER5056A card has 128-bytes onboard FIFO buffer and compatible with 16C950 UART specification. It is designed with SUNIX UART controller, SUN1999 and as well built with many of SUNIX advanced features and technologies, making it the best solution for commercial and industrial automation applications.








  • Expands 4 independent RS-232 serial port with communication speeds up to 115.2Kbps.
  • High reliability SUN1999 16C950 compatible UART controller on-board.
  • Compliance with PCI 33MHz Ver. 3.0/2.3/2.2./2.1 specification.
  • Supports both 64-bit & 32-bit PCI bus slot and 3.3V & 5V power.
  • On-chip hardware auto flow control to guarantee no data loss.
  • Built-in ± 2KV ESD protection for all serial signals.
  • Plug-n-Play, I/O address and IRQ assigned by BIOS.
  • Certified by CE, FCC, RoHS, and Microsoft WHQL approval.
  • Support Microsoft Windows, Linux, and DOS.



 Product Description  4-port RS-232 Universal PCI Serial Board

 Serial Communication

 Interface  RS-232
 Controller  SUNIX SUN1999 (16C950 UART Compatible)
 Bus  Universal PCI 64/32bit 3.3V/5V PCI Ver 3.0, 2.3, 2.2, 2.1
 No. of Port  4-port
 IRQ & IO  Assigned by System
 FIFO  128 byte (Hardware)
 Signal  TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, RI
 Baud rate  50 bps to 115.2 Kbps
 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  ±2KV ESD protection for each signal Human Body Model (HBM)
 PCB connector  DB44 Female

 Driver Support

 Windows Client  XP/Vista/7/8/8.1 (X86/X64)
 Windows Server  2000 / 2003 / 2008 / 2008 R2 / 2012 / 2012 R2 (X86/X64)
 Windows Embedded  Windows CE 4.2/5.0/6.0
XP Embedded / POSReady 2009 / POSReady 7 / Embedded System
 Linux  Linux 2.4.x / 2.6.x / 3.x
 FreeBSD  FreeBSD 5.3~5.5 / 6.0~6.4
 QNX  QNX 6.3.2/6.4.0
 * IBM OS/2  WARP 3/WARP 4
 * SCO UnixWare  UnixWare 7.1.3/7.1.4/ Open Server 5.0.7/6.0
 * Sun Microsystems  Solaris 10
 Note : “ * ” Supported by special inquiry.

 Regulatory Approvals

  Hardware  EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, FCC Part  15 Class B, BSMI: CNS13438, C-Tick: CISPR22 AS/NZS, RoHS
 Software  Microsoft WHQL Windows
• Windows Client: XP/Vista/7/8/8.1 (X86/X64)
• Windows Server: 2000/2003/2008/2008 R2/2012/2012 R2  (X86/X64)


 Operation Temperature  0 to 60°C (32 to 140°F)
 Operation Humidity  5 to 95% RH
 Storage Temperature  -20 to 85°C (-4 to 185°F)


 PCB Dimension  120 x 68 mm
 Bracket  Standard 121 mm
 Bracket Space  1
  • One PCI card
  • User Manual
  • Driver CD
  • Includes both regular height and low profile brackets
  • 1 to 4 x BD9 cable
Download Datasheet 
Download Manual 
Driver: SUN1999Driver V8.2.0.0 (WHQL) with inf – 20151208
Update: 2016-03-18 09:38:47
Size: 4.8MB


Windows 10 32/64 bit
Windows 8.1 32/64 bit
Windows 8.0 32/64 bit
Windows 7 32/64 bit
Windows Vista 32/64 bit
Windows Server 2012R2 64-bit
Windows Server 2012 64bit
Windows Server 2008 R2 64bit
Windows Embedded POSReady 2009
Driver: SUN1999Driver V8.0.0.0 (WHQL) –
Version: sun1999driver v8.1.5.0 (whql) – 20150520
Update: 2015-06-09 19:00:49
Size: 4.4MB


Windows XP 32/64 bit
Windows Embedded Standard
Driver: I/O Card linux driver
Version: V2.0.4.2
Update:  2016-06-23 15:24:38
Size: 274KB
OS: Linux 2.4x/2.6x/3.x/4.x
Driver:  SUNDOS1.00.00.006 Version: V1.00.00.006 icon_download_blue
Update: 2014-08-19 10:36:25
Size: 21KB
Driver:  snx_V2.0.4.0.tar Version: V2.0.4.0 icon_download_blue
Update: 2015-06-13 15:15:54
Size: 69.5KB
OS: Linux 2.4x/2.6x/3.x
Driver: WinCE 6.0 Driver V1.2.0.0 Version: V1.2.0.0 icon_download_blue
Update: 2013-09-11 15:40:33
Size: 301.7KB
OS: Windows CE 6.0
Driver:  .. (WHQL) – 20110302 Version: V7.2.0.0 (WHQL) icon_download_blue
Update: 2013-12-02 18:00:44
Size: 4.3MB
OS: Windows 2000
Driver: .. 4.2_ Version: Ver. icon_download_blue
Update: 2011-06-10 11:50:00
Size: 236KB
OS: Windows CE 4.2
Driver: ..E Version: Ver. icon_download_blue
Update: 2011-06-10 11:50:29
Size: 280KB
OS: Windows CE 5.0
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