StarTech 2-Port RS-232 Serial PCIe Adapter Card with 16950 UART

StarTech 2-Port RS-232 Serial PCIe Adapter Card with 16950 UART

StarTech 2-Port RS-232 Serial PCIe Adapter Card with 16950 UART

B&H # STPEX2S952 MFR # PEX2S952
Special Order
Expected availability: 3-7 business days

Product Highlights

  • Adds Two RS-232 Serial Ports
  • Native Single Chip Design
  • PCIe Specifications Rev 1.0a Compliant
  • 128-Byte Deep Transmit/Receive FIFOs
  • Data Transfer Rate of up to 460.8 Kb/s
  • Reduces CPU Load by up to 48%
  • CE, FCC, and RoHS Certified
  • Windows and Linux Compatibility
Show moreShow less

Ports: 2


Special Order


B&H $500 Gift Card Dash

Share for a chance to win a $500 B&H Gift Card!

Share on Twitter

Share a favorite product for chances to win one of eight $500 B&H Gift Cards!
1 new winner announced every Monday starting Nov 5th!
Limit 1 entry per day: Come back every day to increase your chance of winning.

Be sure to mention #BHWishList when you share!

Congrats to our winners so far:

Next winner: Dec 24th

James Z. (Wk 1)

Ralph H. (Wk 2)

Arturo M. (Wk 3)

Rich P. (Wk 4)

Valeria A. (Wk 5)

Sabrina B. (Wk 6)

Carolyn W. (Wk 7)

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about October 28, 2018 until on or about December 23, 2018 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website (the "Website") on Facebook or Twitter via the dedicated links contained on the website using the hashtag #BHWishlist; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $500.00 Gift Card Dash Sweepstakes, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total eight (8) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $500.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $500.00 Gift Card Dash Sweepstakes Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $500.00 Gift Card Dash Sweepstakes, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0 VA Sales Tax Collected on This Item
Add to Wish List Item in Wish List

StarTech PEX2S952 overview

  • 1Description

The 2-Port RS-232 Serial PCIe Adapter Card with 16950 UART from StarTech turns a PCIe slot into two RS-232 (DB9) serial connections. The adapter card is based on a native single chip design that provides optimum reliability and speed, while reducing the load applied to the CPU by as much as 48% over conventional (bridge chip) serial cards. The serial adapter card is compatible with a broad range of operating systems, including Windows and Linux (Kernel 2.6.11 and later). Furthermore, it includes an optional half-height/low-profile bracket that allows the card to be installed in virtually any computer case, making it easier to add serial ports to a PCIe-enabled computer, regardless of the size of the computer case.

Selectable power output on pin 9 for the serial port
Features two high-speed RS-232 serial ports with data transfer rate up to 460.8 Kb/s
Compliant with PCIe base specification revision 1.0a
Native single-chip, single-lane PCIe offers increased speed and reduces CPU load by up to 48%
Includes both standard and half-height/low-profile mounting brackets to ensure easy installation into almost any system
High performance dual channel Oxford 950 UART
128-byte deep FIFO per transmitter and receiver
Automated in-band software flow control using programmable Xon/Xoff in both directions
Automated out-of-band hardware flow control using Tx/Rx/RTS/CTS/DSR/DTR/DCD/RI/GND


Self service automated machines and kiosks to control serial devices such as scales, touch screens, magnetic card readers, bar code scanners, receipt printers, and label printers
POS retail applications in grocery stores, and any other retail store to control keyboards, cash drawers, receipt printers, card readers/card swipes, scales, and elevated displays on poles
Bank teller workstations in either full profile or low-profile versions to control serial devices such as cash drawers, card readers/card swipes, printers, keypads/pinpads, and pen pads
Standard ATM automated teller machines to control keypads, receipt printer, card readers/card swipes, touchscreen LCDs, camera control, and more
Used to control multiple surveillance/security cameras in a parking structure, an office building, and more
UPC: 065030831581
In the Box
StarTech 2-Port RS-232 Serial PCIe Adapter Card with 16950 UART
  • 2 x Low Profile Brackets
  • Driver CD
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    StarTech PEX2S952 specs

    Interface Serial
    Ports 2
    Bus Type PCIe
    Card Type Standard profile

    Low-profile bracket included

    Port Style Integrated on card
    Type 1 x PCIe x1 male
    Internal Ports 1 x LP4 (4-pin; Molex large drive power) male
    External Ports 2 x DB-9 (9-pin; D-Sub) male
    Baud Rate Maximum: 460.8 Kb/s
    Serial Protocol RS-232
    Data Bits 4, 5, 6, 7, 8
    FIFO 128 bytes
    Stop Bits 1, 1.5, 2
    OS Compatibility Windows 7/8/Vista/XP (32/64-bit), XP Embedded, CE 6.0/5.0
    Windows Server 2012, 2008 R2, 2003 (32/64-bit), 2000
    Linux 2.4.x/2.6.x
    Humidity 5~85% RH
    Compliance CE, FCC, RoHS
    Operating Temperature -10 to 80°C (14 to 176°F)
    Storage Temperature -20 to 100°C (-4 to 212°F)
    Physical Characteristics
    Dimensions (L x W x H) 3.5 x 2.6 x 0.8" (88.9 x 66.0 x 20.3 mm)
    Weight 2 oz (56.6 g)
    Packaging Info
    Package Weight 0.3 lb
    Box Dimensions (LxWxH) 6.8 x 5.6 x 1.2"

    StarTech PEX2S952 reviews

    Be the first to review this item

    StarTech PEX2S952 Q&A

    See any errors on this page? Let us know.