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4-Port Serial + 1-Port Parallel PCI Express Card (with both Regular & Low-Profile brackets)


The majority of today´s motherboards are not equipped with any RS-232 or parallel port. With SUNIX MIO5499H Multi I/O board, users can expand four RS-232 and one IEEE1284 parallel ports to their system, allowing them to use serial and parallel devices further. SUNIX MIO5499H is compatible with PCI Express x1, x2, x4, x8 and x16 lane and PCI/PCI-x Bus, allowing the board to be installed in virtually any PC system. Furthermore, SUNIX MIO5499H Multi-IO card supports majority of the OS on the market. We provide driver support for Microsoft Windows 32/64-bit platform, Linux, making it the best and most economical solution for commercial and industrial applications


  • Expands 4-port RS-232 COM and 1-port IEEE1284 LPT on system.
  • Designed to meet PCI Express Base Specification Revision 1.1.
  • High reliability SUNIX SUN1999 16C950 compatible Multi-IO controller on-board.
  • Expands four RS-232 serial port with communication speed up to 921.6Kbps.
  • On-chip hardware auto flow control to guarantee no data loss.
  • Built-in ±15KV ESD protection for all serial signals meets IEC1000-4-2 standard.
  • Support IEEE 1284-1994 parallel port standard
    • * ECP(Enhance Capacity Port) / EPP(Enhance Parallel Port)
    • * SPP(Standard Parallel Port) / BPP(Bi-direction Parallel Port)
  • Auto-switching between ECP/EPP/SPP/BPP modes without configuration.
  • Plug-n-Play, I/O address and IRQ assigned by system.
  • Certified by CE, FCC, RoHS, and Microsoft WHQL approval.
  • Support Microsoft Windows, Linux, and DOS.

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  • Interface RS-232 and IEEE1284
  • Controller SUNIX SUN1999 (16C950 UART Compatible)
  • Bus PCI Express one lane (x1)
  • IRQ & IO Assigned by System

Serial Communication

Interface RS-232

No. of Port 4-port

FIFO 128 byte (Hardware)


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 ±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

Cable Connector DB9 Male

Parallel Communication

Interface IEEE1284

No. of Port 1-port

FIFO 16 byte (Hardware)


Speed Maximum 1.8MBps

PCB connector 13x2 Pin Header

Cable Connector DB25 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


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 116 x 69 mm

Bracket Standard 121 mm

Bracket Space 2



* Do not support LPT Key Locker Parallel device.

* LPT port does not support legacy 278/378 ISA address under Windows nor Linux operation systems, but only DOS mode.

* ECP / EPP / SPP / BPP modes work under Windows, and Linux driver only supports SPP mode.


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