Order online or Call 1.866.880.1230
My Account  spacer Your Cart Is Empty
Save on open box and refurbished computers & electronics
Why Tech For Less

great deals when you sign up.

See a sample email

Shop by Brand
Quick Links Promotions
Compare at: $230.99
Today Only! $129.97
deal of the day


Facebook Icon
Twitter Icon
Click on images for full-sized view
Product Image

Only 4 Left In Stock! Buy Now!

StarTech PEX4S553B

New - Open Box Condition Description 4 Left
Low Price Guarantee
• Original manufacturer condition
• Includes accessories
• Manufacturer warranty
  • New - Open Box products are in original manufacturer condition, include accessories, and carry the manufacturer warranty.
  • Manuals and software might not be included, but can usually be downloaded from the manufacturer.
  • These items can be in the original manufacturer box or repackaged for protection during shipping.
Compare At $72.32
Free Shipping!
Extra discount applied
StarTech PEX4S553B
StarTech PEX4S553B 4-Port RS232 PCI Express Serial Card - Wired - 250 Kbps

The PEX4S553B 4-Port PCI Express Serial Card (with breakout cable) lets you add 4 RS232 serial ports using a single PCIe expansion slot. The PCIe Serial Card includes a 1-to-4 break out cable, which enables you to add 4 serial ports to a single low profile slot. The serial adapter card features a native single-chip design that provides optimum reliability and speed, reducing the CPU load by up to 48% over conventional bridge-chip serial cards - a cost-effective solution for connecting legacy serial devices to PCIe-enabled computers. The multi-port serial adapter includes both full profile/height and low profile/half-height brackets for compatibility with standard and small form factor computers, and is compatible with a broad range of operating systems, including Windows 7/Server 2008 R2, 2003/Vista/XP (32 and 64 bit), Linux Kernel 2.6.11 and up, as well as MAC OS 10.5 and above. This product is a replacement for the PEX4S552B card.

Read More IndicatorView specifications

You May Also Like
StarTech.com USB 3.0 to Gigabit Ethernet NIC Network Adapter with 3 Port Hub - White - USB - External - 3 USB Port(s) - 1 Network (RJ-45) Port(s) - 3 USB 3.0 Port(s)
Read More IndicatorRead More


StarTech PCI100MMST 100 Mbps PCI Ethernet NIC Network Adapter
Read More IndicatorRead More


StarTech PEX1000MMSC PEX1000MMSC Fiber Optic Gigabit Ethernet Multi Mode SC PCI Express Card - PCIe 1.0a - Plug-in Card
Read More IndicatorRead More


The Tech For Less Advantage:

  • Over 2 Million Satisfied Customers Since 2001
  • All Items are Inspected by Experienced Technicians
  • Includes Manufacturer Warranty
  • 30 Day Money Back Guarantee
  • Easy Returns
  • Same Day Shipping
  • Lowest Price Guarantee

Contact Us

1610 Garden of the Gods Rd.
Colorado Springs, CO 80907

Sales: 1.866.880.1230

Operating Hours

Monday — Friday
Outlet Store:
9:00am to 6:00pm MT
Phone Inquiries:
8:00am to 6:00pm MT

Email Us
Sales/Product Questions
After Sales Support
Customer Service Request Form


Testimonial Area Cap
1st time customer. I found a good deal here and went for it. I got exactly what I wanted exactly as it was advertised, ...
Robert L. -
Nov 24th 2015
Testimonial Area Bottom
*The Compare At price is the lowest price we've recently found on the Web from another reputable merchant and can include a shipping cost.