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About this product
The Sunix MIO4089AM PCI expansion card adds reliable legacy connectivity to modern systems by providing 2 x RS232 serial ports and 2 x parallel ports on a single PCI card. Designed for industrial and commercial environments, it supports high speed data transfer, advanced FIFO buffering, and robust ESD protection for stable long term operation.
Overview Summary
Sunix MIO4089AM 2 Port Serial x 2 Port Parallel PCI Card
The Sunix MIO4089AM is a professional grade PCI interface card engineered for systems that require dependable serial and parallel communication. It combines 2 x RS232 serial ports using a 16C550 compatible controller with 2 x parallel ports supporting SPP, BPP, ECP, and EPP modes. This makes it ideal for integrating legacy peripherals into 32-bit and 64-bit PCI systems.
Powered by the Sunix Matrix UL7522EQ chipset, the card delivers serial speeds up to 115.2 Kbps and parallel throughput up to 2.7 Mbps. Advanced hardware and software FIFO buffering ensures smooth data flow, while high level ESD protection enhances durability in electrically noisy environments. The card requires 2 PCI slots and supports both 3.3V and 5V PCI signaling.
The majority of today's motherboards is not equipped with any RS-232 or parallel port. With SUNIX MIO4089AM Multi I/O board, users can expand 2 RS-232 and 2 IEEE1284 parallel ports to their system, allowing them to use serial and parallel devices further. SUNIX MIO4089AM is compatible with both 32/64-bit PCI architecture supporting 3.3 and 5V Bus, allowing the board to be installed in virtually any PC system. Furthermore, SUNIX MIO4089AM Multi-IO card supports majority of the OS on the market. We provide driver support for Microsoft Windows 32/64-bit platform, WinCE, Linux 2.2.x ~ 2.6.x kernels, making it the best and most economical solution for commercial and industrial applications.
Description
The Sunix MIO4089AM PCI card is built to extend system connectivity where legacy serial and parallel interfaces are still required. Its dual RS232 serial ports are based on a 16C550 compatible controller, ensuring wide software compatibility and stable communication with existing devices.
The parallel ports support multiple operation modes including SPP, BPP, ECP, and EPP, allowing flexible integration with printers and specialized hardware. With combined hardware and software FIFO buffering, the card minimizes data loss and improves transmission reliability during sustained workloads.
Designed for professional deployment, the card features comprehensive ESD protection including 15KV air gap discharge and 8KV contact discharge compliance. This makes it well suited for industrial, commercial, and embedded environments where electrical interference is common.
Features
2 x RS232 serial ports using 16C550 compatible controller
2 x parallel ports supporting SPP, BPP, ECP, and EPP modes
Sunix Matrix UL7522EQ chipset for stable performance
Supports 32-bit and 64-bit PCI systems
Compatible with 3.3V and 5V PCI slots
32 + 16 byte hardware FIFO with 128K software FIFO
Serial speeds up to 115.2 Kbps and parallel speeds up to 2.7 Mbps
15KV ESD protection and IEC1000-4-2 compliance
What's in the Box
Sunix MIO4089AM PCI serial and parallel expansion card
Pin Header to DB9 Male & DB25 Female Connector Bracket Set
Dimension(Unit = mm)
PCB Dimension
120 x 100
Bracket
Standard 121
FAQ
What systems is the Sunix MIO4089AM compatible with?
The card is compatible with systems that provide a standard PCI slot and support both 32-bit and 64-bit architectures using 3.3V or 5V PCI signaling.
What types of devices can be connected to this card?
It supports RS232 serial devices such as industrial controllers and POS equipment, as well as parallel devices including legacy printers and specialized hardware.
Does the card support high reliability environments?
Yes, it includes advanced FIFO buffering and high level ESD protection, making it suitable for industrial and commercial applications.
How many PCI slots does this card require?
The Sunix MIO4089AM requires 2 adjacent PCI slots for installation.
Reviews have been submitted by users and do not necessarily reflect our own opinion.
The best price and guaranteed service and backup from official computer suppliers in South Africa for the AC-Si4089A Sunix mio4089AM - 2 port serial + 2 port parallel PCI Multi-IO Card.
The Sunix
AC-Si4089ASunix mio4089AM - 2 port serial + 2 port parallel PCI Multi-IO Card is available for R600. The product is sold by ComX Computers as new. Prices are valid today 2026-10-05 (before , by quote, while stocks last). The product is expected to be in stock, although this is not guaranteed.
Available from this online computer store delivering door-to-door in Johannesburg, Cape Town, Port Elizabeth, Pretoria, Pietermaritzburg, Polokwane, Durban and all over South Africa.
Find related AC-Si4089A Sunix mio4089AM - 2 port serial + 2 port parallel PCI Multi-IO Card products in our Multi I/O PCI interface Category for even more options. Read reviews and find out about AC-Si4089A Sunix mio4089AM - 2 port serial + 2 port parallel PCI Multi-IO Card. Discounts, specials and cheap prices only at ComX Computers.
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