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StarTech 2-Port PCIe to RS232 DB9 Serial Card 21050PCSERIALCARD
- Manufacturer: STARTECH
- Manufacturer Part Number: 21050PCSERIALCARD
- UPC: 065030894760
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Overview
Specs
Reviews
Add serial communication support to your desktop computer or Small Form Factor (SFF) system, using this two-port serial card. RS-232 (DB9) support enables control and communication with a serial peripheral device.
Legacy Connectivity
Install this card to enable the continued use of legacy serial devices, preventing down time and avoiding costly upgrades. The 2-port PCIe serial card is ideal for system upgrades in a wide range of applications for logistics, manufacturing, and freight sectors, and the IT industry, such as POS equipment, security systems, A/V installations, and more.
Connect with Ease
The RS-232 card features dual ports with 16C1050 UART support, 256-byte FIFO (transmit/receive), bi-directional speeds up to 921.6 Kbps per port, low-profile brackets are included for SFF systems, and serial port LED status lights. In addition, it supports Windows and Linux systems for maximum compatibility.
21050-PC-SERIAL-CARD is backed for 2-years by StarTech.com, including free lifetime 24/5 multi-lingual technical assistance.
More from the Manufacturer
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.ca's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
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The StarTech 21050PCSERIALCARD is a two-port PCIe card that adds RS-232 DB9 serial connectivity to a desktop or small-form-factor PC, making it suitable for users who need to connect legacy serial peripherals such as POS, security, or A/V equipment.
Recommended For
- IT and maintenance teams keeping RS-232 equipment in service—such as POS, security, or A/V systems—on a desktop or small-form-factor PC with an available PCIe slot.
- Logistics, freight, or manufacturing operators who need two RS-232 connections from one PC to communicate with existing serial equipment.
- Windows or Linux desktop users whose serial devices or applications need two DB9 RS-232 ports added internally, rather than through a USB adapter.
- Small-form-factor PC builders who need RS-232 connectivity and a low-profile bracket option for the computer case.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Adding two RS232 serial connections for compatible devices such as barcode readers, receipt printers, scales, PLCs, and medical devices |
| Serial Connectivity | Two-port serial interface for connecting RS232 devices |
| Adapter Details | ASIX style in yellow |
| Physical Specifications | 0.7 × 2.9 × 4.7 inches; item weight 0.11 pounds |
| Model Identifiers | Model 21050-PC-SERIAL-CARD |