StarTech.com 4-Port Serial PCIe Card, Quad-Port RS232/RS422/RS485 Card, 16C1050 UART, ESD Protection, Windows/Linux, TAA-Compliant

$192.69
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4 availableas of 09/10/2026

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Compliance and certifications

  • TAA compliant
  • RoHS
  • WEEE
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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the StarTech.com 4-Port Serial PCIe Card, Quad-Port RS232/RS422/RS485 Card, 16C1050 UART, ESD Protection, Windows/Linux, TAA-Compliant

Add serial communication support to a desktop computer or Small Form Factor (SFF) system, using this 4-Port Serial PCI Express Card. The four DB9 ports can be independently configured to support RS-232, RS-422, and 2/4-wire RS-485 standards, for communication with compliant serial peripheral devices.

Per-Port Serial Configuration

This PCIe Serial Card is equipped with on-board DIP switches, enabling each DB9 serial port to operate in RS-232, RS-422, and/or RS-485 mode(s). The card features LED indicators per port, providing real-time monitoring of port activity.

Configurable External SATA Power

The PCI Express Serial Adapter Card features three power modes that are configurable via on-board jumpers, including 12V (1.5A per port), 5V (1.5A per port), or no power (RI), over pin 9.

Legacy Connectivity

This serial card enables the continued use of legacy serial devices, preventing down time and avoiding costly upgrades. The 4-Port PCIe Serial Card is an ideal system upgrade for a wide range of applications (e.g., point-of-sale terminals, PLCs, factory control and automation, scientific sensors, medical equipment, scanners, and oscilloscopes)

Technical specifications

Technical Specifications of the StarTech.com 4-Port Serial PCIe Card, Quad-Port RS232/RS422/RS485 Card, 16C1050 UART, ESD Protection, Windows/Linux, TAA-Compliant

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number PS74ADFSERIALCARDPS74ADF-SERIAL-CARD
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name 4-Port Serial Card
Packaged Quantity 1
Product Type Serial Adapter

Technical Information

Technical Information specifications
Host Interface PCI Express 2.0 x1
UART Type 16C65016C55016C95016C45016C750
Platform Supported LinuxPC

Interfaces/Ports

Interfaces/Ports specifications
Number of Serial Ports (External) 4

Physical Characteristics

Physical Characteristics specifications
Form Factor Plug-in Card
Card Height Low-profile
Height 0.6"
Width 4.3"
Depth 4.8"
Weight (Approximate) 2.12 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • 4-Port Serial Card
  • 4 x Low-Profile Bracket
  • 3 x Ribbon Cable
  • 1 x Quick-Start Guide
Green Compliant Yes
Environmental Compliance Restriction of Hazardous Substances (RoHS)Waste Electrical and Electronic Equipment Directive (WEEE)
TAA Compliant Yes

Warranty

Warranty specifications
Limited Warranty 2 Year

Ratings and reviews

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Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.