StarTech.com 2 Port PCIe Serial Adapter Card with 16550 UART, High Performance RS232 DB9, Native Single Chip Design, Mac Linux Windows Compatible - PEX2S553 (2 Year Warranty)

Top view of StarTech.com PEX2S553 PCIe serial adapter card showing dual DB9 ports and circuit board-alternate-image1
Close-up view of the dual DB9 serial ports on the PEX2S553 adapter bracket-alternate-image2
Angled view of the PEX2S553 PCIe card showing circuit board components and design-alternate-image3
Side view of PEX2S553 showing low-profile design and PCIe connector-alternate-image4
Retail packaging of StarTech.com PEX2S553 serial adapter showing product details and contents-alternate-image5
Top view of StarTech.com PEX2S553 PCIe serial adapter card showing dual DB9 ports and circuit board-alternate-image1
Close-up view of the dual DB9 serial ports on the PEX2S553 adapter bracket-alternate-image2
Angled view of the PEX2S553 PCIe card showing circuit board components and design-alternate-image3
Side view of PEX2S553 showing low-profile design and PCIe connector-alternate-image4
Retail packaging of StarTech.com PEX2S553 serial adapter showing product details and contents-alternate-image5
Top view of StarTech.com PEX2S553 PCIe serial adapter card showing dual DB9 ports and circuit board-alternate-image1
Close-up view of the dual DB9 serial ports on the PEX2S553 adapter bracket-alternate-image2
Angled view of the PEX2S553 PCIe card showing circuit board components and design-alternate-image3
Side view of PEX2S553 showing low-profile design and PCIe connector-alternate-image4
Retail packaging of StarTech.com PEX2S553 serial adapter showing product details and contents-alternate-image5
StarTech.com 2 Port PCIe Serial Adapter Card with 16550 U...
Top view of StarTech.com PEX2S553 PCIe serial adapter card showing dual DB9 ports and circuit board-alternate-image1
Close-up view of the dual DB9 serial ports on the PEX2S553 adapter bracket-alternate-image2
Angled view of the PEX2S553 PCIe card showing circuit board components and design-alternate-image3
Side view of PEX2S553 showing low-profile design and PCIe connector-alternate-image4
Retail packaging of StarTech.com PEX2S553 serial adapter showing product details and contents-alternate-image5

StarTech.com 2 Port PCIe Serial Adapter Card with 16550 UART, High Performance RS232 DB9, Native Single Chip Design, Mac Linux Windows Compatible - PEX2S553 (2 Year Warranty)

StarTech.com PEX2S553

$62.49
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  • 2 Year Warranty
  • 30 Day Returns
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Product Key Features

  • 🔌 2 RS232 (DB9) serial ports via PCIe x1 interface
  • ⚡ High-speed data transfer up to 460.8kB/s
  • 💻 Compatible with Windows, Linux (2.6.11-4.11.x), and Mac OS 10.4+
  • 🎯 Native single-chip design reduces CPU load by up to 48%
  • 📏 Low-profile bracket included for versatile installation
  • 🔧 16550 UART type for reliable serial communication
  • ✨ Plug-and-play installation with included drivers
  • 🛡️ Backed by 2-year warranty
  • ♻️ RoHS certified environmentally friendly design
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StarTech.com 2 Port PCIe Serial Adapter Card with 16550 UART, High Performance RS232 DB9, Native Single Chip Design, Mac Linux Windows Compatible - PEX2S553 (2 Year Warranty)

This item: StarTech.com 2 Port PCIe Serial Adapter Card with 16550 U...

$62.49

Total price: $62.49
  • Description
  • Tech Specs
  • Refund Policy

StarTech.com

PEX2S553

StarTech.com PEX2S553 2 Port PCIe Serial Adapter Card with 16550 UART

Transform your PCI Express slot into two high-performance RS232 DB9 serial ports with the StarTech.com PEX2S553 PCIe Serial Adapter Card. This native single-chip design adapter delivers superior performance with data transfer rates up to 460.8kB/s while reducing CPU load by 48% compared to conventional serial cards.

Advanced PCIe Serial Connectivity Features

  • Native single-chip, single lane PCI Express architecture for optimal performance
  • 16550 UART support for reliable serial communication
  • Dual RS232 DB9 ports with transfer speeds up to 460.8kB/s
  • Versatile form factor with included standard and low-profile brackets

Broad Operating System Compatibility

The PEX2S553 supports multiple platforms including:

  • Windows® (DOS through Windows 10)
  • Windows Server® (2003 through 2019)
  • Mac OS X® (10.4 to 10.10)
  • Linux kernel 2.6.x to 4.11.x LTS versions

Physical Specifications

  • Compact dimensions: 4.7" width x 4.1" length x 0.8" height
  • Lightweight design at just 2.20 oz
  • Half-height/Low-profile form factor
  • RoHS compliant for environmental sustainability

Package Contents

  • 2 Port PCIe Serial Adapter Card with 16550
  • Low Profile Brackets
  • Driver CD
  • Instruction Manual

Warranty and Support

Backed by StarTech.com's 2-year warranty and lifetime technical support, ensuring reliable performance and peace of mind for your serial connectivity needs.

Top view of StarTech.com PEX2S553 PCIe serial adapter card showing dual DB9 ports and circuit board

Native PCIe Performance with Dual RS232 Ports

The StarTech.com PEX2S553 delivers superior serial connectivity through its single-chip native PCIe design. The card's advanced architecture reduces CPU load by up to 48% compared to conventional serial cards while providing reliable RS232 communication through two DB9 ports. The integrated 16550 UART ensures stable data transfer rates up to 460.8 kbps.

Technical Specifications

  • Native single-chip PCIe design for optimal performance
  • Dual RS232 DB9 ports with 16550 UART support
  • Data transfer rates up to 460.8 kbps

Applications

  • Industrial automation and machine control
  • Point-of-sale systems and retail terminals
  • Legacy serial device integration
Close-up view of the dual DB9 serial ports on the PEX2S553 adapter bracket

Dual DB9 Serial Ports for Maximum Connectivity

The dual DB9 serial ports feature robust metal housing and secure mounting screws for reliable connections. Each port supports full RS232 serial communication with hardware flow control, making it ideal for connecting multiple legacy devices or industrial equipment. The standardized port layout ensures compatibility with a wide range of serial peripherals.

Technical Specifications

  • Industry-standard DB9 connectors with metal housing
  • Full RS232 serial support with flow control
  • Secure mounting screws for stable connections

Applications

  • Scientific instrument control
  • Industrial sensor monitoring
  • Multi-device serial communication
Angled view of the PEX2S553 PCIe card showing circuit board components and design

High-Quality Circuit Design for Reliable Performance

The PEX2S553's premium circuit board features high-grade components and careful layout design for optimal signal integrity. The single-chip architecture minimizes potential points of failure while providing superior EMI protection. Surface-mount technology and quality capacitors ensure long-term reliability in demanding environments.

Technical Specifications

  • Premium PCB with surface-mount technology
  • Integrated EMI protection
  • High-grade electronic components

Applications

  • Manufacturing equipment integration
  • Laboratory instrumentation
  • Continuous operation environments
Side view of PEX2S553 showing low-profile design and PCIe connector

Low-Profile Design for Flexible Installation

The adapter's versatile form factor supports both standard and low-profile installations. The included low-profile bracket enables compatibility with compact systems and servers. The PCIe x1 interface ensures broad compatibility across modern motherboards while maintaining maximum throughput for serial communications.

Technical Specifications

  • PCIe x1 interface compatibility
  • Standard and low-profile bracket options
  • Compact form factor design

Applications

  • Small form factor PC integration
  • Server rack installations
  • Space-constrained system upgrades
Retail packaging of StarTech.com PEX2S553 serial adapter showing product details and contents

Complete Installation Package with Multi-Language Support

Each PEX2S553 comes in a comprehensive package with everything needed for immediate deployment. The included documentation provides clear installation instructions in multiple languages, while the driver CD ensures compatibility across various operating systems. The retail packaging protects the card during shipping and storage.

Technical Specifications

  • Multi-language installation guide
  • Cross-platform driver support
  • Complete mounting hardware included

Applications

  • IT department deployments
  • System integrator installations
  • International market distribution
Return Policy Time to Return
Standard Return Policy We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return Policy qualify for our 30-Day Hassle-Free Returns.
Replacement Only Return Policy Replacement within 30 days of the delivery date.
Manufacturer Only Return Policy Covered by the manufacturer's warranty. Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer.
FAQ
The StarTech.com PEX2S553 is a PCIe serial adapter card that provides 2 RS232 (DB9) serial ports. It features a native single-chip design that reduces CPU load by up to 48% compared to conventional serial cards. The card supports data transfer rates up to 460.8kB/s, includes both standard and low-profile brackets for universal fit, and is compatible with Windows, Linux, and Mac operating systems. It comes with a 16550 UART type for reliable serial communication.
The PEX2S553 supports a wide range of operating systems including Windows DOS, 95, 98SE, 2000, XP, Vista, 7, 8, 8.1, and 10; Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016, and 2019; Mac OS X 10.4 to 10.10; and Linux kernel versions 2.6.x to 4.11.x (LTS versions only). It also supports Windows CE 5.0/6.0, Embedded System 2009, and POS Ready 2009.
The PEX2S553 measures 4.7" in width, 4.1" in length, and 0.8" in height, weighing approximately 2.20 oz. It's designed as a half-height/low-profile plug-in card and includes both standard and low-profile brackets, ensuring compatibility with virtually any computer case size. The card requires an available PCI Express x1 slot for installation.
The package includes the 2 Port PCIe Serial Adapter Card with 16550, low profile brackets for alternative mounting options, a driver CD containing necessary software and drivers, and a comprehensive instruction manual for easy installation and setup.
The PEX2S553 supports a maximum data transfer rate of 460.8kB/s through its RS232 serial ports, making it suitable for various serial communication applications and device connections requiring reliable data transfer.
StarTech.com provides a 2-year limited warranty for the PEX2S553 PCIe Serial Adapter Card. Additionally, customers receive free lifetime technical support to assist with any installation or operation questions throughout the product's life.
The native single-chip design eliminates the need for a bridge chip, resulting in up to 48% reduced CPU load compared to conventional serial cards. This architecture enables true PCIe performance and improved system efficiency, making it ideal for systems where resource optimization is important.
Yes, the PEX2S553 is environmentally friendly and RoHS certified, ensuring compliance with environmental standards for electronic components. This certification confirms that the product meets strict requirements for the restriction of hazardous substances in electronic equipment.

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