Previous Previous Next Next
Siig JJ-P20511-S3 Serial/Parallel Adapters Jj-p20511-s3 2-port Pci Serial Adapter Jjp20511s3 662774008707

Part Number: JJ-P20511-S3
Condition: New
Availability: Out of stock   
Real time availability   

Notify Me


Cleveland Award

Best of Cleveland Award in the Computers category

Inc. 500|5000 list

Compsource is honored to be named to the Inc. 500|5000 list

Ranked among the top 500 companies | internet retailer

Ranked among the top 500 companies

Microsoft authorized Education reseller

Microsoft authorized Education reseller

HP Qualified Supplies Partner

HP Qualified Supplies Partner

BBB Accredited Business Since 2000

BBB Accredited Business Since 2000

Regular:$49.99
Save:$19.90 (40%)

Your Price:
$30.09

As low as $3/month
Buy Now, Pay Later




Square Trade
4xbuyerprotection
  • Shipping Insurance
  • Price Match Guarantee
  • Terms of Service Guarantee
  • Identity Theft Protection
FREE with your purchase
Expert Name, Expert Title
Let our Specialist make your purchase easier

Product Specifications



2PORT 9PIN SERIAL RS232 550 VALUE PCI BOARD - Plug-in Card - PCI - PC (JJ-P20511-S3)

2PORT 9PIN SERIAL RS232 550 - VALUE PCI BOARD

Manufacturer Part Number: JJ-P20511-S3

2-Port Serial 550-Value PCI board with two 9-pin serial ports



CPN:2PORT 9PIN SERIAL RS232 550 - VALUE PCI BOARD
MANUFACTURER NAME: Siig
MANUFACTURER PART NUMBER: JJ-P20511-S3
UPC EAN CODE: 662774008707
LANGUAGE: EN
MARKET:US

General Information:

SIIG's 2-Port Serial 550-Value is an excellent solution for you to connect additional high-speed serial-based devices to your system. It is designed to add two 9-pin (DB9) serial ports to your PCI-enabled desktop computer. This 2-port serial adapter card comes with two high-speed 16550 UART DB9 serial ports delivering data transfer rates of up to 16Mb/s. It features IRQ sharing to reduce IRQ conflicts and deep FIFOs to enable high data throughput and reduce CPU utilization. The 2-Port Serial 550-Value can be installed in 32-/64-bit, 3.3v/5v PCI and PCI-X slots.

The 2-Port Serial 550-Value is FCC Class B (DoC) & CE regulatory approved and RoHS-compliant. It is fully compatible with DOS and a wide variety of Windows operating systems and is backed by SIIG's limited 2-year warranty.

ManufacturerSIIG, Inc
Manufacturer Part NumberJJ-P20511-S3
Manufacturer Website Addresshttp://www.siig.com
Brand NameSIIG
Product ModelJJ-P20511-S3
Product NameJJ-P20511-S3 2-port PCI Serial Adapter
Product TypeSerial Adapter
  Product UPC662774008707
Technical Information:
Host InterfacePCI
Platform SupportedPC
UART Type16550
Physical Characteristics:
Form FactorPlug-in Card
Miscellaneous:
What's in the box
  • JJ-P20511-S3 2-port PCI Serial Adapter
  • Driver CD
  • User's Manual
Environmentally FriendlyYes
Country of OriginChina
Warranty:
Warranty2 Year

Date Inserted: Tuesday February 7, 2023

This product was last updated on Saturday April 18, 2026

All products are brand new and factory sealed unless otherwise stated.
 *** Disclaimer- Information is supplied by the Manufacturer. The image, including color, may differ from actual product appearance. CompSource, Inc. is not responsible for data. ***

Questions and Answers

Questions and Answers

Ask CompSource

Shipping / Returns

Shipping

Ground = $12.95
(Delivery within 2-7 business days)

Two Day Air = $25.00
(Delivery within 2 business days)

Standard One Day = $35.00
(Delivery within next business day)

Priority = $45.00
(Delivery within next business morning)

U.S Mail Priority (AA,AE,AP only) = $30.00

FedEx International Economy (Canada only) = $85.00

Typically out of stock items are filled within 1 to 14 business days but can and may take longer.

Shipping dates are best estimates based on product location and may vary with holidays.

If product requires trucking, additional fees may apply.

* Some destinations are subject to Applicable State/Duty Taxes

Returns

CompSource realizes that every product may have different return guidelines. Please see the policy below regarding this item.

This Product Has Limited Exchange Privileges.

Please call for return guidelines.

For support on this product, please contact Siig. 510-657-8688 www.siig.com


Siig Company's Information

Siig  
Click Siig for all products

Local #: (510)413-5316

Toll Free #: 510-657-8688

Tech Support #: 510-353-7542

Site:  www.siig.com

Product Reviews

Overall Rating | Write a Review

    Best Sellers
    More Best Sellers

    Recently Viewed

    About Siig

    Why SIIG Technologies Are a Smart Choice – Available at CompSource

    Since 1985, SIIG Inc. has been a trusted name in the world of IT and AV connectivity. With a legacy built on innovation, reliability, and customer satisfaction, SIIG continues to lead the way in delivering high-performance solutions that bridge the gap between technology and usability.

    Whether you're outfitting a corporate office, educational institution, medical facility, or home setup, SIIG provides scalable, durable, and future-ready solutions.

    Why Choose SIIG?

    SIIG stands out for its:

    • Proven Track Record: Over 40 years of industry leadership
    • Customer-Centric Design: Products built with usability and performance in mind
    • Wide Market Reach: Serving corporate, residential, hospitality, education, medical, and government sectors
    • Compliance & Quality: TAA-compliant and industrial-grade options available

    Why Buy SIIG from CompSource?

    https://www.compsource.com/ is an authorized distributor of SIIG products, offering:

    • Competitive Pricing on the latest SIIG technologies
    • Fast Shipping and reliable customer service
    • Expert Support to help you choose the right solution
    • Trusted Source for IT professionals and businesses nationwide

    We want this to be as easy and stress-free as possible. CompSource is here to help with your Siig purchase. We're here to help you decide. Chat with us or give our professionals a quick phone call (800)-413-7361, we can assist with the best Siig solution for your needs and budget.

    Here are our most popular categories;

    © 2025 CompSource Inc. All rights reserved.


    About the Author

    Mason Maynard - Marketing Manager of CompSource

    Mason Maynard

    Mason Maynard is a people-oriented individual who finds joy in spending quality time with friends and family, valuing strong personal connections. With a strong interest in Marketing and Sales, Mason thrives on creating impactful strategies that engage audiences and drive meaningful results. Mason is passionate about innovation, business growth, and delivering top-tier customer service.

    Connect with Mason on: LinkedIn


    Received goods very quickly and well packaged. The price was the best I could find on the web! I'll be shopping CompSource again, I'm sure PeterWoz
    More Reviews

    eStores

    Connect With Us