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2-Port PCIe RS-232 DB9 Serial Port Card - Windows XP/7/8/10/11 & Linux Compatible (32/64bit) for Fast Data Transfer (PCIe1X to Serial to Parallel Port)
BZIZU

BZIZU 2-Port PCIe RS-232 DB9 Serial Port Card

Bottom line: The BZIZU 2-Port PCIe RS-232 DB9 Serial Port Card is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category, priced around $19.98 on Amazon as of 2026-10-06. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$19.98

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Buy on Amazon — $19.98 Compare to similar expansion cards

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Backed by BZIZU's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

Product DescriptionUpgrade your connectivity with the 2-Port PCI Express RS-232 DB9 Serial Port Card. This card adds two RS232 DB9 serial ports to desktop PCs and industrial devices via a PCI Express slot, perfect for connecting POS systems, industrial equipment, security devices, scanners, and printers.Featuring the ASIX AX99100 chipset, it supports a 256-byte FIFO for efficient data transfer. Compatible with Windows XP, Vista, 7, 8.x, 10, 11 (32/64-bit) and Linux kernels from 2.6.x to 5.x, it ensures versatile deployment.Installation is easy with a plug-and-play setup. The full-size…

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SpecPicks Verdict

SpecPicks scored BZIZU 2-Port PCIe RS-232 DB9 Serial Port Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. BZIZU'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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Expansion Interface: Easily add 2 RS232 DB9 serial ports to desktop PCs or industrial devices via the motherboard's PCI Express slot, meeting a variety of device connection needs
  • Wide Compatibility: Seamlessly connect to DB9 serial devices such as POS systems, industrial testing and control equipment, security systems, logistics management devices, scanners, and printers, suitable for various application scenarios
  • Multi-Platform Support: Driver compatible with Windows XP, Vista, 7, 8.x, 10, 11 (32/64-bit) and Linux kernels 2.6.x, 3.x, 4.x, 5.x, ensuring smooth installation and use across different systems
  • Efficient Data Transmission: Utilizes the ASIX AX99100 solution, supporting 256-byte deep FIFO transmission, compatible with Intel, AMD, and ARM hardware platforms, providing stable serial data transmission performance
  • Flexible Installation: Comes with a standard full-size bracket for standard PCs, and includes 2 low-profile brackets for perfect compatibility with slim PCs. Based on the PCIe X1 interface, compatible with X1, X4, X8, and X16 slots
  • Important: Ensure your PC has an available PCIe slot, switch to the low-profile bracket for slim PCs, and install the correct driver from the Mini-CD for desktop use

Full Specifications

BrandBZIZU
StyleStandard
Style NameStandard
Unit Count1.0 Count
Model NumberPCIe1X to serial to parallel port
CompatibilityPC, Switch, Linux
Mfr Part NumberPCIe1X to serial to parallel port
Compatible DevicesPersonal Computer, Printer
Hardware InterfacePCI Express x1
Warranty DescriptionOne-year warranty
Item Dimensions L x W x H2.57"L x 0.63"W x 2.36"H
Full listing title2-Port PCIe RS-232 DB9 Serial Port Card - Windows XP/7/8/10/11 & Linux Compatible (32/64bit) for Fast Data Transfer (PCIe1X to Serial to Parallel Port)

Ready to buy?

2-Port PCIe RS-232 DB9 Serial Port Card - Windows XP/7/8/10/11 & Linux Compatible (32/64bit) for Fast Data Transfer (PCIe1X to Serial to Parallel Port) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $19.98

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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2-Port PCIe RS-232 DB9 Serial Port Card - Windows XP/7/8/10/11 & Linux Compatible (32/64bit) for Fast Data Transfer (PCIe1X to Serial to Parallel Port)
$19.98
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