StarTech 4-Port RS-232 PCIe Serial Card with Breakout Cable

StarTech 4-Port RS-232 PCIe Serial Card with Breakout Cable

StarTech 4-Port RS-232 PCIe Serial Card with Breakout Cable

Special Order
Expected availability: 3-7 business days

Product Highlights

  • Native Single-Chip Design
  • Up to 48% CPU Load Reduction
  • 2.5 Gb/s Single-Lane PCIe Throughput
  • CTS/RTS & DSR/DTR Flow Control
  • Supports Re-Map Function
  • Standard & Low-Profile Brackets
  • 256-Byte FIFO Buffer
  • ISDN Networking
  • Windows, Linux, & Mac OS Compatible
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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.

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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.

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StarTech PEX4S553B overview

  • 1Description

The 4-Port RS-232 PCIe Serial Card with Breakout Cable from StarTech lets you add 4 RS-232 serial ports using a single PCIe , low profile expansion slot, with an included 1-to-4 cable. The serial 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. This card is a cost-effective solution for connecting legacy serial devices to PCIe-enabled computers.

The 4-port serial adapter includes both full-profile and low-profile/half-height brackets for compatibility with standard and small form factor computers. It is compatible with a broad range of operating systems, including Windows, Linux, and Mac OS.

Native single-chip, single lane PCIe design ensures optimal system performance (up to 48% less CPU load)
Includes both standard and low-profile/half-height brackets, which makes this card suitable for any application, including small form factor embedded applications
Breakout cable design; only one expansion slot is needed to add 4 additional serial ports to any system
On-chip 256-byte depth FIFO in transmit/receive path of each port
Single-lane (x1) PCIe with throughput up to 2.5 Gb/s
Supports hardware and software flow control
Supports re-map function for legacy ports 1
Supports data transfer rates up to 250 Kb/s on each port
Compliant with PCIe base specification revision 1.0a
Automated out-of-band flow control using CTS/RTS and DSR/DTR
Point-of-Sale (POS credit/debit card readers, receipt printers, bar code scanners, cash registers, scales)
Manufacturing (CNC machinery, process control equipment, bar code scanners, serial printers)

Connect specialized parallel and serial devices like printers, scanners, ISDN terminal adapters, CD-R/RWs, Zip drives, and memory card readers

Environmental Control (lighting, temperature, clocks)

Entertainment (video lottery terminals, slot machines, gaming systems)

Healthcare (patient monitoring equipment, nurses' stations, modems) Security (UPS control, access key panels, video cameras, card readers, modems)

Hospitality/restaurant (serial printers, bar code scanners, keyboard, mouse, receipt printer, credit/debit card reader)

Consumer (modems, PDAs, digital cameras, printers)

ISDN networking
UPC: 065030842556
In the Box
StarTech 4-Port RS-232 PCIe Serial Card with Breakout Cable
  • Breakout Cable
  • Full-Profile Bracket
  • Driver CD
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    StarTech PEX4S553B specs

    Card Type Low profile
    Interface Serial
    Ports 4
    Bus Type PCIe
    Port Style Dongle (included)
    Chipset ID ASIX/MosChip - MCS9904CV-AA
    Connector Type 1 x PCIe x1 male
    External Ports 4 x DB-9 (9-pin; D-Sub) male
    Max Baud Rate 230.4 Kb/s
    Serial Protocol RS-232
    Data Bits 5, 6, 7, 8
    FIFO 256 bytes
    Parity Even, Odd, None, Space, and Mark
    OS Compatibility Windows 8 (32/64-bit), 7 (32/64-bit), Vista (32/64-bit), XP (32/64-bit), XP Embedded, POS Ready 2009, Embedded System 2009, CE 5.0/6.0, 2000, 98SE, 95, DOS
    Windows Server 2012, 2008 R2, 2003 (32/64-bit)
    Mac OS 10.4 and up (Tested up to 10.9)
    Operating Temperature 32 to 158°F (0 to 70°C)
    Storage Temperature -40 to 185°F (-40 to 85°C)
    Humidity 5~85% RH
    Compliance CE and RoHS compliant
    Microsoft WHQL Certified Yes
    Physical Specifications
    Dimensions (L x W x H) 3.2 x 0.5 x 2.7" (81.2 x 12.7 x 68.5 mm)
    Weight 1.8 oz (51.0 g)
    Packaging Info
    Package Weight 0.75 lb
    Box Dimensions (LxWxH) 8.4 x 5.7 x 1.6"

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