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StarTech 2-Port PCI Express Serial Interface Card, TAA (21050-PC-SERIAL-LP) | Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, For Windows/Linux, Low/Full Profile Brackets
StarTech.com

StarTech 2-Port PCI Express Serial Interface Card, TAA (21050-PC-SERIAL-LP) | Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, For Windows/Linux, Low/Full Profile Brackets

By , Hardware Editor · Verified 2026-09-11

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

$60.00

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*Price sourced from Amazon.com. Last updated 2026-09-10. Price and availability subject to change.

Bottom line: The StarTech 2-Port PCI Express Serial Interface Card, TAA (21050-PC-SERIAL-LP) | Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, For Windows/Linux, Low/Full Profile Brackets is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category, priced around $60.00. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Add serial communication support to a Small Form Factor (SFF) or full-size system, using this two-port serial card. RS-232 (DB9) support enables control and communication with serial peripheral devices. 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…

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SpecPicks Verdict

SpecPicks scored StarTech 2-Port PCI Express Serial Interface Card, TAA… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the expansion cards category. StarTech.com's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

  • ✓ Backed by StarTech.com's warranty and support channels
  • ✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

  • PCIE TO SERIAL: Connect serial RS232 (DB9) devices to a computer with this low profile PC serial card; Features support for high performance 16C1050 UART on both DB9 male ports; Monitor activity with the built-in LED status lights on the PCI express DB9 card
  • DEVICE COMPATIBILITY: Use this serial interface card to connect barcode readers/scanners, receipt printers, scales, PLCs, medical devices, etc; The UART PCIe card supplies 5V or 12V power over pin 9; Full-profile bracket included
  • APPLICATIONS: This card is ideal for IT applications such as server rooms, industrial control/automation, logistics, and laboratories; Continue using legacy hardware with this RS232 PCIe card; DB9 ports accept screw locking serial cables
  • DUAL SERIAL PORT CARD SPECS: 16C1050 UART, Max Baud 921.6 Kbps per Port, 256 Byte FIFO, COM Retention, Supports Windows/Linux, ASIX AX99100 Chipset, Odd/Even/Mark/Space/None Parity Modes, 5/6/7/8/9 Data Bits, PCIe 2.0 x1, Low-Profile Brackets Installed

Full Specifications

BrandStarTech.com
StyleClassic
Style NameClassic
Unit Count1.0 Count
Model Number21050-PC-SERIAL-LP
CompatibilityPC, Linux
Mfr Part Number21050-PC-SERIAL-LP
Compatible DevicesSerial RS232 devices
Hardware InterfacePCI Express x1, Serial Interface
Warranty Description2-Year

Ready to buy?

StarTech 2-Port PCI Express Serial Interface Card, TAA (21050-PC-SERIAL-LP) | Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, For Windows/Linux, Low/Full Profile Brackets is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-09-10. Price and availability subject to change.

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StarTech 2-Port PCI Express Serial Interface Card, TAA (21050-PC-SERIAL-LP) | Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, COM Retention, For Windows/Linux, Low/Full Profile Brackets
$60.00
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