Skip to: | - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - once you know, you Newegg.

If you are reading this message, Please click this link to reload this page.(Do not use your browser's "Refresh" button). Please email us if you're running the latest version of your browser and you still see this message. - Computer Parts, Laptops, Electronics, HDTVs, Digital Cameras and More!

Sign up today for a 30-day free trial of Newegg Premier
  • Shipping Destination: United States
  • Wish List
  • Feedback
  • Help
Search all
Home > 
Computer Hardware > 
Computer Accessories > 
Add-On Cards > 
SIIG, Inc > 
Item#: N82E16815150172

SIIG 2-Port Serial Add-On Card Model JJ-P20511-S3 - OEM

  • PCI to Serial Port Card
  • Pin It
  • Email this page
ICON Loading...

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.

Industry standards met by this Moship MCS9865 powered serial adapter include PCI v2.2 Plug and Play, PCI Local Bus Specification, Revision 2.3, RoHS, and FCC Class B (DoC) and CE regulatory approvals. Compatible with DOS and a wide variety of Windows operating systems, the 2-Port Serial 550-Value is the high performance solution to connect a wide variety of high-speed serial port devices to your system.

  • newegg Add Serial Connectivity to Your Computer The SIIG JJ-P20511-S3 adapter card adds two 9-pin serial ports to your PCI enabled computer for hassle-free connection to a rich variety of serial port devices such as modems, PDAs, and more.
  • newegg PCI Interface The utilization of PCI interface enables a broad compatibility with a wide range of systems and offers adequate bandwidth for bottleneck-free data transfer.

Learn more about the SIIG, Inc JJ-P20511-S3




PCI to Serial Port Card
External Ports
2 x Serial Ports
Compliant with PCI Local Bus Specification, Revision 2.3
Chip: Moschip MCS9865
Full support for DOS and Windows based software
PCI IRQ sharing feature reduces IRQ conflicts
Ports: 2x serial ports (9-pin, RS-232, 16550 UART)
RoHS compliant


Adds 2 (9-pin) serial ports to your PCI enabled system
Can be installed in 32-/64-bit, 3.3V/5V PCI and PCI-X slots
Works with modems, PDAs, and high-speed serial devices

Manufacturer Warranty

2 years limited

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 0 day

Customer Reviews of the SIIG, Inc JJ-P20511-S3

There are no reviews yet... do you own this product? Write a Review

ICON Loading...
ICON Loading...

Protect Your Investment!

    • (more options) read warranty details
Are you an E-Blast Insider? Subscribe Newegg e-Blast
Shop without retyping payment details. Secure shopping made faster.
Check out with PayPal.

Home > 
Computer Hardware > 
Computer Accessories > 
Add-On Cards > 
SIIG, Inc > 
Item#: N82E16815150172
Shop by Region: United States | Canada | China
VeriSign Click for the BBB Business Review of this Computers - Supplies & Parts in Whittier CAThis site protected by Trustwave's Trusted Commerce program Inc500
Policy & Agreement | Privacy Policy  © 2000-2014 Newegg Inc.  All rights reserved.
If the Adobe Reader does not appear when you click on a link for a PDF file, you can download Adobe Reader from the Adobe web site. nassau