StarTech
.com 2-Port PCI Express Serial Card with 16C1050 UART - RS232 Low Profile Serial Card - PCI Serial Card, TAA (PEX2S1050)
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
This 2-port PCI express serial card adds two high-performance RS232 serial ports to your device, for connecting your serial-based devices and equipment. The dual port serial PCI express card can be installed into an available PCI Express slot, to provide two high-performance 16C1050 RS232 serial UART channels/ports. It offers a convenient solution for connecting modern or legacy equipment to newer computer systems that don't have RS232 ports. The low-profile serial card is compliant with PCI Express 1.0a specification, and it's compatible with 1x, 2x, 4x, 8x and 16x PCI Express slots. The…
SpecPicks Verdict
SpecPicks classifies StarTech.com 2-Port PCI Express Serial Card with 16C1050 UART… as a solid pick with broad community endorsement in the expansion cards category, based on 56 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. StarTech's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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
- ✓ Solid 4.4★ customer rating
- ✓ Backed by StarTech'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
- MEETS INDUSTRY STANDARDS: The 2-port PCI express serial card is compliant with PCI Express 1.0a specification, and it's compatible with 1x, 2x, 4x, 8x and 16x PCI Express slots.
- MAXIMUM COMPATIBILITY: The dual port DB9 to PCIe adapter is ideal for system upgrades in a wide range of applications including manufacturing equipment, POS equipment, and security devices.
- HIGH-PERFORMANCE COMMUNICATION: The low-profile serial card delivers high-performance serial communication, with support for data transfer rates of up to 460Kbps.
- SIMPLE INSTALLATION: The PCI dual serial adapter features IRQ sharing and supports plug-and-play connection. It has a standard-profile bracket installed, and an optional low-profile bracket.
Full Specifications
| Brand | StarTech.com |
|---|---|
| Unit Count | 1.0 Count |
| Model Number | PEX2S1050 |
| Built-In Media | 1-driver CD, 1-quick-start guide, 1-serial card, 2-low-profile brackets |
| Connector Type | DB9 |
| Item Type Name | 2-Port PCI Express Serial Card with 16C1050 UART - RS232 - PCIe serial card with Dual Channel 16C1050 UART |
| Item Dimensions | 3.09 x 3.6 x 0.6 inches |
| Mfr Part Number | PEX2S1050 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Power Plug Type | No Plug |
| Compatible Devices | Various devices and operating systems |
| Warranty Description | 2 Years |
| Smart Home Compatibility | Not Smart Home Compatible |
Ready to buy?
StarTech.com 2-Port PCI Express Serial Card with 16C1050 UART - RS232 Low Profile Serial Card - PCI Serial Card, TAA (PEX2S1050) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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