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About this product
Buy the Sunix 6456H 4-Port PCI Express RS232 Serial Card for reliable high-speed industrial serial communication in South Africa. Featuring the SUN2410 chipset, 921.6 Kbps baud rate support, 128-byte hardware FIFO, and advanced 15KV ESD protection, this PCIe x1 card delivers stable multi-device connectivity for automation, CNC systems, and legacy equipment integration. Install the standard or low-profile bracket and shop now for dependable serial expansion performance in professional computing environments.
Overview Summary
The Sunix 6456H is a 4-port RS232 PCI Express serial expansion card designed for industrial and embedded computing environments. It uses the SUNIX SUN2410 native UART controller to deliver stable and efficient multi-port serial communication through a PCIe x1 interface.
With support for high-speed data transmission up to 921.6 Kbps, this card is suitable for connecting legacy serial devices such as PLC controllers, CNC machinery, modems, and industrial sensors. The 128-byte hardware FIFO buffer and 128KB software FIFO ensure smooth data handling and reduced risk of transmission loss.
Built for durability, the Sunix 6456H includes advanced surge protection with 15KV ESD shielding (air, contact, and human body model standards), making it ideal for demanding industrial environments where electrical interference is common.
Performance tier: Industrial / Professional
Uses: CNC control systems, factory automation, PLC communication, legacy serial device integration, embedded computing
Overview
SUNIX SER6456H, PCI Express serial communication boards meet the PCI Express Base Specification Revision 2.0. It is compatible with PCI Express x1, x2, x4, x8 and x16 lane Bus allowing it to be installed in any PC-based system. The majorities of today's motherboards is not equipped with serial ports or only have one serial port. With SUNIX PCI Express serial board, users can add four serial ports to their system, allowing them to use serial devices further. SUNIX SER6456H card has 128-bytes onboard FIFO buffer. It is designed with SUNIX UART controller, SUN2410 and as well built with many of SUNIX advanced features and technologies, making it the best solution for commercial and industrial automation applications.
Description
The Sunix 6456H PCI Express RS232 serial card is designed to expand desktop or industrial PCs with four high-performance COM ports. Built around the SUN2410 chipset, it ensures stable and efficient serial communication across multiple connected devices. Its PCIe x1 interface allows broad compatibility with modern motherboards while maintaining support for legacy RS232 equipment.
This card is engineered for reliability in automation, manufacturing, and embedded systems where consistent serial data transfer is essential. The inclusion of a 128-byte hardware FIFO buffer improves throughput and reduces latency, ensuring accurate communication even under heavy workloads.
Features
Key features of the Sunix 6456H include:
4 x RS232 serial ports for multi-device connectivity
SUNIX SUN2410 PCI Express UART controller for stable performance
High-speed communication up to 921.6 Kbps baud rate
128-byte hardware FIFO and 128KB software FIFO buffer
PCI Express x1 interface for modern PC compatibility
Standard and low-profile bracket included for flexible installation
Advanced 15KV ESD protection (air, contact, and HBM standards)
Plug and play configuration with system-assigned IRQ and I/O
It is used to add four RS232 serial ports to a computer, enabling connection to industrial equipment such as CNC machines, PLCs, and legacy serial devices.
Is the Sunix 6456H suitable for industrial use?
Yes, it is designed for industrial environments with strong ESD protection and stable multi-port serial communication for automation systems.
Does it support modern operating systems?
Yes, it supports Windows, Linux, and DOS environments with driver support for industrial and embedded systems.
What speed does the serial communication support?
It supports baud rates up to 921.6 Kbps for high-speed RS232 communication.
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-Si6456H+L Sunix 6456H 4-port RS-232 High Speed PCI Express Board.
The Sunix
AC-Si6456H+LSunix 6456H 4-port RS-232 High Speed PCI Express Board is available for R1515. The product is sold by ComX Computers as new. Prices are valid today 2026-09-22 (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-Si6456H+L Sunix 6456H 4-port RS-232 High Speed PCI Express Board products in our Multi-I/O PCI-Express interface Category for even more options. Read reviews and find out about AC-Si6456H+L Sunix 6456H 4-port RS-232 High Speed PCI Express Board. Discounts, specials and cheap prices only at ComX Computers.
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