axGear

axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI I/O Card Adapter

Name: axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI I/O Card Adapter
Brand: axGear
SKU: B01M3025UL

Bottom line: The axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

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. About the author →

Pros & Cons

Pros

✓ Plug and Play, automatically assigned IRQ and I / O address.

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Used and vintage listings vary by seller and condition — check the listing photos, description and return terms before buying

Manufacturer description

PCI Series Adapter Card 2 PortsFeatures:Plug and Play, automatically assigned IRQ and I / O address.Support PCI I / Q shared.You can manually change the port number of additional serial port card.Consistent with PCI Rev2.1 Agreement.Consistent with standard input and output of 16C550 UART with 16 byte transmit-receive FIFO.Transfer rate up to 1 Mbytes / sec.Two DB9 serial port connectors.Support Hot swapping.Support PC with 32-bit PCI slot, MS Windows 98SE / Me / 2000 / XP /Linux, Vista, Win 7, Win 8.Package Included:1 x 2-port PCI Serial Adapter Card1 x Driver CD

SpecPicks Verdict

SpecPicks scored axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to… using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. axGear'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

Plug and Play, automatically assigned IRQ and I / O address.
You can manually change the port number of additional serial port card.
Support PCI I / Q shared.
Consistent with PCI Rev2.1 Agreement.
Consistent with standard input and output of 16C550 UART with 16 byte transmit-receive FIFO.

Full Specifications

Brand	axGear
Style	Classic
Style Name	Classic
Unit Count	1 Count
Model Number	SERIAL-PCI
Mfr Part Number	SERIAL-PCI
Number of Items	1
Number of Packs	1
Compatible Devices	Personal Computer
Hardware Interface	PCI

Ready to buy?

axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI I/O Card Adapter is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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