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AC-Si6437PHL+S

Sunix SER6437PHL 2-port RS-232 High Speed PCI Express Low Profile Board with ..

Sunix - Sunix SER6437PHL 2-port RS-232 High Speed PCI Express Low Profile Board with Power Output Sunix ser6437PHL - Low-profile + extra Standard dual bracket - 2 port high-speed serial (16c950) RS232, pci-Express (1x), 5V/12V/Ri (no power) selectable for each serial port (enable serial devices to function without ac-adapter) +1.1 Amp PTC, 128byte hardware + 128k software FiFo, SUN2212 chipset, 921.6 Kbps, 15KV ESD protection + 15KV IEC1000-4-2 Air Gap Discharge + 8KV IEC1000-4-2 Contact Discharge
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Specials
Prices, images and descriptions are for reference purposes only & may change without prior notice. PLEASE RELY ON ABOVE DESCRIPTIONS AND NOT ON IMAGES. AC-Si6437PHL+S Sunix SER6437PHL 2-port RS-232 High Speed PCI Express Low Profile Board with Power Output is available from Laptop Direct and it is sold as new from our Multi-I/O PCI-Express interface range of products. For reference purposes, the price of R903 is valid 2026-11-03, and while stocks last, may be valid until . The price displayed is a guide for reference purposes only, and may change without prior notice. Reference prices are an invitation for potential buyers to make an offer to purchase, which we may reject without reason. A quote with final pricing is sent before a purchase can be made. T&C's apply. E&OE. Laptop Direct. You are looking at products found in the Multi-I/O PCI-Express interface category.
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Specification for the entire series

Important information: Kindly note that specifications differ between models. Features, options and accessories displayed below this paragraph are not included with this product unless it has been specified in the above description.


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AC-Si6437PHL+S

Sunix SER6437PHL 2-port RS-232 High Speed PCI Express Low Profile Board with Power Output

Sunix ser6437PHL - Low-profile + extra Standard dual bracket - 2 port high-speed serial (16c950) RS232, pci-Express (1x), 5V/12V/Ri (no power) selectable for each serial port (enable serial devices to function without ac-adapter) +1.1 Amp PTC, 128byte hardware + 128k software FiFo, SUN2212 chipset, 921.6 Kbps, 15KV ESD protection + 15KV IEC1000-4-2 Air Gap Discharge + 8KV IEC1000-4-2 Contact Discharge

About this product

The Sunix SER6437PHL is a low-profile, high-speed dual serial PCI-Express card featuring 2 RS232 ports with advanced 16C950 chipset technology. Designed for reliable serial communication, it offers selectable 5V/12V/Ri per port, 128byte hardware and 128k software FiFo buffers, and robust ESD protection for industrial and professional applications.

Overview Summary

Sunix SER6437PHL Dual Serial PCIe Card

The Sunix SER6437PHL offers a professional solution for connecting serial devices via PCI-Express with high reliability. Featuring a low-profile design with an extra standard dual bracket, this card ensures compatibility in a variety of system setups while maintaining high-speed data transfer up to 921.6 Kbps.

Equipped with the SUN2212 chipset, each RS232 port can operate with selectable 5V/12V/Ri power, eliminating the need for an external AC adapter. Advanced 128byte hardware and 128k software FiFo buffers reduce data loss, while 15KV ESD and IEC1000-4-2 protection safeguard sensitive equipment.

What tier does this fall into?

Professional / Industrial

What is this best for?

Serial device connectivity, industrial automation, POS systems, networking equipment, legacy device support

Overview

SUNIX SER6437PHL, PCI Express serial communication board, supports +5 or +12VDC power via serial COM 1st and 9th pin output. It's convenient for users connecting serial devices without addition external power supply. SUNIX SER6437PHL meets the PCI Express Base Specification Revision 2.0, allows users to add or expand two RS-232 COM ports on PC-based system to use serial devices further. It is compatible with PCI Express x1, x2, x4, x8 and x16 lane Bus allowing it to be installed in any PC-based system with low profile bracket structure. The majorities of today's motherboards does not equipped with serial ports or only have one serial port. With SUNIX PCI Express serial board, users can add one serial port to their system, allowing them to use serial devices further. SUNIX SER6437PHL card has 128-bytes onboard FIFO buffer. It is designed with SUNIX UART controller, SUN2212 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 SER6437PHL is engineered for reliable serial communication in both industrial and professional environments. Its low-profile design allows installation in small form-factor systems, while the extra standard dual bracket ensures flexibility in various chassis types. Each RS232 port supports high-speed transfer rates up to 921.6 Kbps, with selectable 5V, 12V, or Ri power to operate devices without additional adapters.

The card integrates advanced 128byte hardware buffers and 128k software FiFo memory to prevent data loss during high-speed transfers. Its robust SUN2212 chipset and protective ESD features provide 15KV air gap discharge and 8KV contact discharge, ensuring safe and stable operation in sensitive environments.

Features

  • Low-profile PCI-Express 1x interface for easy installation
  • Dual RS232 ports with 16C950 chipset for high-speed communication
  • Selectable 5V/12V/Ri power per port to support serial devices without AC adapter
  • 128byte hardware + 128k software FiFo buffers for reliable data transfer
  • 921.6 Kbps maximum transfer rate for fast serial communication
  • 15KV ESD protection and IEC1000-4-2 compliance for safe operation
  • Extra standard dual bracket included for flexible mounting options

Optional 5V / 12V / Signal Output over COM
For SUNIX PoweredIO Serial card, user can select +5VDC and +12VDC power output over both COM 1st or 9th pins. In addition, this board also keeps the original RS-232 signal for traditional application using. In order to make sure the power stable and convenient, the DC power sources from the system power supply over standard Serial-ATA power socket. SUNIX PoweredIO Serial card is designed for users who want to connect serial peripherals without using extra power adaptor.

Reliable Circuit Protection
Each RS-232 port is protected with a 1.1 Amp PTC (Positive Temperature Coefficient) resettable fuse. The PTC may temporarily allow more that 1.1 Amp to be drained. Typically, a PTC will shut off after approximately 15 seconds drawing more than 1.9 Amp. The PTC will turn off the power for each individual port if an unusual overload is sustained. Besides in order to satisfy kinds of serial device power requirements, each RS-232 port can support 1100mA output in the PCB circuit design.

What's in the Box

  • Sunix SER6437PHL PCI-Express Dual Serial Card
  • Low-profile and standard dual brackets
  • Installation guide
  • Screw kit for mounting

Specifications

© 2026 Respective owners and brand holders. This table has been carefully researched and generated by Laptop Direct CC (https://www.laptopdirect.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specifications and features
Product Code AC-Si6437PHL+Sspacer
General
Interface RS-232
Controller SUNIX SUN2212
BUS PCI Express Spec 2.0, Single-Lane (x1)
IRQ & IO Assigned by System
Serial Communication
Interface RS-232
No. of Port 2-port
FIFO 128byte Hardware
Signal DCD, TxD, RxD, RTS, CTS, DTR, DSR, GND, RI/12V/5VDC
Baud rate 50bps ~ 921.6Kbps
Stop bit 1, 1.5, 2
Parity even, odd, none, mark, space
Flow Control None, Xon/Xoff, RTS/CTS
ESD Protection ±15KV Human Body Model (HBM)
±15KV Air Gap Discharge
±8KV Contact Discharge
PCB Connector DB44 Female
Driver Support
Windows Client XP / Vista / 7 / 8.x / 10 (X86/X64) / 11
Windows Server 2003 / 2008 / 2012 / 2016 / 2019 / 2022 (X64)
Windows Embedded XP Embedded / POSReady 2009 / POSReady / Embedded System 2009
Linux Linux 2.x / 3.x / 4.x / 5.x / 6.x
DOS DOS
*UNIX FreeBSD / QNX / SCO OpenServer / SCO UnixWare / Solaris
*IBM OS/2 WARP 3/WARP 4
"*" marked as a project supported operating system. Please contact us if you have any further need.
Regulatory Approvals
Hardware CE, FCC, VCCI, BSMI
Software Microsoft WHQL Windows
Windows Client: XP / Vista / 7 / 8.x / 10 (X86/X64) / 11
Windows Server: 2003 / 2008 / 2012 / 2016 / 2019 / 2022 (X64)
Environment
Operation Temperature 0 to 60degreesC (32 to 140degreesF)
Operation Humidity 5 to 95% RH
Storage Temperature -20 to 85degreesC (-4 to 185degreesF)
Dimension
PCB Dimension 77 x 68 mm
Bracket Low Profile 80 mm
Bracket Space 1

FAQ

What types of devices can be connected to the Sunix SER6437PHL?

This card supports a wide range of RS232 serial devices, including industrial controllers, POS systems, and legacy networking equipment.

Does the Sunix SER6437PHL require an external power adapter?

No, each port has selectable 5V/12V/Ri power, enabling serial devices to function without an AC adapter.

Is the card compatible with small form-factor systems?

Yes, the low-profile design and included dual brackets allow installation in compact and standard desktop cases.

How does the card handle data integrity?

It features 128byte hardware and 128k software FiFo buffers, combined with the SUN2212 chipset, ensuring reliable high-speed data transmission without loss.

What protection does the card provide against electrical surges?

The Sunix SER6437PHL includes 15KV ESD air gap and 8KV contact discharge protection to safeguard connected devices in industrial environments.

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