Skip to main content

StarTech

Startech 2 Port Native Pci Express Rs232 Serial Adapter Card With 16550 Uart - PEX2S553

Product code: UK-STT-PEX2S553
UPC: 65030841740
Condition: New
Availability: Vendor Direct Ship | ETA - Request A Quote | Email: sales@hssl.uk | Call Us: +44 330 043 2524
Minimum Purchase: 2 units

Request A Quote

SSL Secure Payment

Startech 2 Port Native Pci Express Rs232 Serial Adapter Card With 16550 Uart - PEX2S553

Startech 2 Port Native Pci Express Rs232 Serial Adapter Card With 16550 Uart - PEX2S553

Startech 2 Port PCIe Serial Adapter Card with 16550 - Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot - pci express serial card - pci-e serial card - PCI express RS232 - rs232 card - Dual Port Serial Card ADAPTER CARD WITH 16550 UART

The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards.

The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 to 4.11.x, and MAC OS 10.4 and above.

Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case.

This product is a replacement for our PEX2S552 card.

Backed by a Startech 2-year warranty and free lifetime technical support.

More from the Manufacturer

 
Features
  • Two high speed RS232 serial ports with support for data transfer rates up to 460.8 Kbps
  • Compliant with PCI Express base specifications revision 1.0a
  • Includes half-height/low profile mounting bracket
  • Selectable power output on pin 9 for the serial port
  • 128-byte deep FIFO per transmitter and receiver
  • Native single-Chip, single lane PCI Express
  • Automated out-of-band flow control using CTS/RTS and DSR/DTR
  • Automated in-band software flow control using programmable Xon/Xoff in both directions

The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards.

The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 and up, and MAC OS 10.4 and above.

Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case.

This product is a replacement for our PEX2S552 card.

Backed by a Startech Lifetime warranty and free lifetime technical support.

 

Technical Specs
Interfaces/Ports
Number of Serial Ports (External) 2
Warranty
Limited Warranty 2 Year
Miscellaneous
Additional Information
      • Native single-chip, single lane PCI Express chipset delivers true PCIe performance.
      • Standard and low profile/half-height bracket included to ensure fitment in any system.
      • Easy to install and use with full step-by-step instructions saving time and hassle.

OS Compatibility:

    • Windows® DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10
    • Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
    • Mac OS X® 10.4 to 10.10
    • Linux kernel 2.6.x to 4.11.x LTS Versions only
Package Contents
  • 2 Port PCIe Serial Adapter Card with 16550
  • Low Profile Brackets
  • Driver CD
  • Instruction Manual
Country of Origin Taiwan
Environmentally Friendly Yes
Environmental Certification RoHS
Physical Characteristics
Weight (Approximate) 2.20 oz
Form Factor Plug-in Card
Length 4.1"
Height 0.8"
Width 4.7"
Card Height Low-profile
Technical Information
Host Interface PCI Express
Data Transfer Rate 460.8kB/s
Platform Supported PC
Linux
Mac
UART Type 16550
General Information
Product Type Serial Adapter
Manufacturer Part Number PEX2S553
Manufacturer Website Address http://www.StarTech
Manufacturer StarTech
Product Model PEX2S553
Product Name 2 Port PCIe Serial Adapter Card with 16550
Brand Name StarTech
(Manufacturer Standard Warranty) - Not Clear what product you need, or can't find your specific product/service part number? Call us +44 330 043 2524 | You can also use the quote request page

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be ship to international destinations.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Manufacturer Warranties

Wide Product Range Trusted Quality Scalable Growth Secure & Efficient Expert Guidance Wide Product Range Trusted Quality Scalable Growth Secure & Efficient Expert Guidance Wide Product Range Trusted Quality Scalable Growth Secure & Efficient Expert Guidance

Driven by Innovation and Integrity

We strive to deliver technology solutions that set new standards in quality and reliability. Guided by innovation and integrity, our focus is on creating lasting value for our customers while building trust through every product and service we provide.

Exceptional Quality

Trusted by 25k+ Happy Customers

Premium Solutions, Exceptional Performance

We offer a carefully curated range of top-tier products designed to deliver unmatched performance and reliability. Each solution is selected to ensure your business stays efficient, secure, and ahead of the competition.

Top
HSSL © 2026. All Rights Reserved.
american expressdiners clubdiscovermaestromasterpaypalvisa
Review Your Cart Close Close
Your cart is empty Your cart is empty Your cart is empty