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StarTech.com 4-Port PCIe RS232 Serial Card 921.6Kbps TAA PEX4S953LP
StarTech.com·MPN: PEX4S953LP

StarTech.com 4-Port PCIe RS232 Serial Card 921.6Kbps TAA PEX4S953LP

The StarTech.com PEX4S953LP 4-Port PCIe RS232 Serial Card enables modern business systems to reliably interface with up to four legacy serial peripherals at speeds of 921.6Kbps, extending the utility of essential equipment.

  • Quad-Port Connectivity: Provides four RS232 (DB9) serial ports, allowing businesses to integrate multiple essential legacy devices without system upgrades.
  • High-Speed Data Transfer: Supports baud rates up to 921.6Kbps, ensuring rapid and efficient communication with connected peripherals like POS systems and card readers.
  • Broad OS Compatibility: Engineered for Windows and Linux operating systems, including Windows Server, ensuring frictionless integration into diverse IT environments.
  • TAA Compliant: Meets Trade Agreements Act requirements, making it suitable for government and public sector procurement and reducing compliance hurdles.
$104.64
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Manufacturer Warranty Included

Product Overview

The StarTech.com PEX4S953LP is a 4-port PCIe RS232 serial card designed to integrate legacy serial devices into modern computer systems, featuring an Asix AX99100 chipset and supporting data rates up to 921.6Kbps. This internal expansion card provides essential connectivity for peripherals that rely on DB9 serial communication.

Engineered for maximum compatibility, this card offers extensive operating system support, including Windows 10, Windows 7, Windows 8.1, and various Windows Server versions, alongside Linux, ensuring broad deployment flexibility and long-term operational value. Its robust design and TAA compliance make it a reliable choice for diverse business applications.

  • Core Functionality: Adds four high-speed RS232 serial ports to a PCIe-enabled computer, allowing businesses to maintain critical operations with existing serial-based equipment.
  • Reliable Data Flow: Features a 256 B FIFO buffer, which prevents data loss during high-volume serial communications, ensuring accuracy for transactional systems.
  • Versatile Device Support: Compatible with a wide range of serial peripherals, including card readers, printers, PIN pads, and modems, extending the lifespan of essential hardware.
  • Operational Resilience: Boasts a Mean Time Between Failures (MTBF) of 214,358 hours, providing exceptional reliability and minimizing unexpected downtime for mission-critical applications.
  • Operational Value: Provides a cost-effective solution for integrating legacy hardware, preserving existing investments and reducing the total cost of ownership for specialized systems.

This serial card is an indispensable solution for businesses seeking to extend the utility of their legacy serial devices within modern IT infrastructures.

Technical Specifications

1Performance & Business Impact
Host InterfacePCIe 1.1
Output Interface4 x RS232 Serial (DB9)
Max Baud Rate921.6 Kbit/s
FIFO Buffer256 B
Mean Time Between Failures (MTBF)214,358 hours
ChipsetAsix AX99100
2Connectivity & I/O
Host ConnectionPCIe
Device Connections4 x DB9 RS232 Serial
Flow ControlNo, RTS/CTS, XON/XOFF
Parity Bit SupportEven, Mark, No, Odd, Space
3Physical & Environmental
Dimensions (W x D x H)75 mm x 63 mm x 18 mm / 2.95 in x 2.48 in x 0.71 in
Weight264 g / 0.58 lbs
Product ColorGreen
Operating Temperature-10 to 80 °C (14 to 176 °F)
Operating Humidity5 - 85% RH (non-condensing)
4Lifecycle, Warranty & Compliance
WarrantyLimited Lifetime Warranty
Included CablesSerial Cable
Mounting BracketsIncluded (Low-Profile)
Compliance CertificationsCE, FCC, RoHS, TAA
Supported Operating SystemsWindows 7/8/8.1/10, Windows Server 2003/2008 R2/2012/2012 R2/2016, Linux

Full Specifications

Manufacturer Data
Ports & interfaces3
Host interfacePCIe
Output interfaceSerial
Expansion card standardPCIe 1.1
Features7
ChipsetAsix AX99100
Baud rate921.6 Kbit/s
FIFO (First In, First Out)256 B
Data bits5, 6, 7, 8, 9
Stop bits1, 1.5, 2
Parity bitEven, Mark, No, Odd, Space
Flow Control typeNo, RTS/CTS, XON/XOFF
Weight & dimensions4
Width75 mm
Depth63 mm
Height18 mm
Weight264 g
Design4
InternalYes
Product colourGreen
Mean time between failures (MTBF)214358 h
CertificationCE, FCC
Operational conditions1
Operating temperature (T-T)-10 - 80 °C
System requirements1
Windows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64
Technical details1
Compliance certificatesRoHS
Packaging data1
Quantity1
Logistics data1
Harmonized System (HS) code84733020
Downloads2
Product Datasheet64 KB
Download
User Manual541 KB
Download

What This Solves

Connecting Legacy Peripherals

Many businesses still rely on specialized serial-based peripherals such as card readers, printers, and modems for daily operations. This card provides four high-speed RS232 ports, allowing these essential devices to connect to modern PCIe-enabled workstations or servers, ensuring continued functionality.

Retail point-of-sale environments, financial service branches, healthcare clinics

Industrial Automation & Control

Industrial and manufacturing environments frequently use equipment that communicates via RS232 serial interfaces for monitoring and control. The StarTech.com PEX4S953LP enables reliable data exchange between modern control systems and legacy machinery, supporting critical operational technology (OT) infrastructure.

Manufacturing plants, logistics warehouses, industrial control rooms, facilities management

Government & Public Sector Compliance

Government agencies and contractors often require products that comply with the Trade Agreements Act (TAA) for procurement. This TAA-compliant serial card ensures that organizations can meet federal purchasing mandates while integrating necessary serial devices into their secure IT environments.

Federal agencies, state and local government offices, public safety departments, educational institutions

Key Features

4-Port RS232 (DB9) Connectivity

Provides ample ports for integrating multiple legacy serial devices, streamlining hardware consolidation and reducing the need for multiple adapter cards.

921.6Kbps Baud Rate

Ensures high-speed and efficient data transfer for connected peripherals, minimizing latency in critical transactional or data acquisition applications.

256 B FIFO Buffer

Prevents data loss during peak communication loads, maintaining data integrity and reliability for sensitive business operations.

Asix AX99100 Chipset

Delivers proven, stable performance and broad compatibility across various operating systems, ensuring consistent and dependable serial communication.

TAA Compliance

Facilitates procurement for government and public sector organizations, ensuring adherence to federal purchasing regulations.

Industry Applications

Retail & Hospitality

Enables integration of essential point-of-sale (POS) systems, barcode scanners, and receipt printers with modern back-office computers.

Manufacturing & Industrial

Connects to industrial control systems, CNC machines, and specialized sensors for data acquisition and process automation.

Government & Public Sector

Provides TAA-compliant connectivity for legacy systems and peripherals, meeting federal procurement requirements for secure operations.

Healthcare & Life Sciences

Supports integration with older diagnostic equipment, lab instruments, and patient monitoring devices that rely on serial communication.

Frequently Asked Questions

What types of legacy devices can connect to this serial card?

This serial card supports a wide range of RS232 (DB9) devices, including point-of-sale (POS) terminals, barcode scanners, receipt printers, modems, and various industrial control equipment. It ensures compatibility for essential business peripherals.

Is this serial card compatible with Windows Server operating systems?

Yes, the StarTech.com PEX4S953LP offers extensive compatibility with Windows Server operating systems, including Windows Server 2003, 2008 R2, 2012, 2012 R2, and 2016, ensuring seamless integration into server environments.

What is the benefit of the 256 B FIFO buffer?

The 256 B FIFO (First In, First Out) buffer helps manage data flow efficiently, especially during high-speed or burst communications. This reduces the risk of data loss and ensures reliable transmission for critical applications.

Does this card require special drivers for installation?

Yes, this PCIe serial card typically requires specific drivers for full functionality, which are provided by StarTech.com and are compatible with supported Windows and Linux operating systems. A quick installation guide is included to assist with setup.

Warranty & Returns

Manufacturer Warranty

Lifetime

Warranty is provided directly by the manufacturer and covers defects in materials and workmanship under normal use.

Return Policy

Returns subject to manufacturer approval

Hardware returns are governed by the manufacturer's return policy. Some products are non-returnable or subject to restocking fees. Defective items are handled under the manufacturer warranty. Contact Zent Networks before initiating any return.

$104.64