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Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse - Built-in USB Controller - Black
Perixx

Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse - Built-in USB Controller - Black

Bottom line: The Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse ($8.99 on Amazon as of 2026-10-06): Built-in USB controller IC converts true PS/2-only keyboards, not just dual-mode devices; main trade-off: color-coded ports are not interchangeable; swap keyboard and mouse and neither responds.

$8.99

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Buy on Amazon — $8.99 Compare to similar keyboards & mice

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

  • ✓ Built-in USB controller IC converts true PS/2-only keyboards, not just dual-mode devices
  • ✓ Two devices on one USB port: purple PS/2 keyboard jack plus green PS/2 mouse jack
  • ✓ Works with the PS/2 ports on a KVM switch, per Perixx's listed compatibility
  • ✓ 8.99 dollars and backed by a 12-month limited warranty from Perixx

Cons

  • ✗ Color-coded ports are not interchangeable; swap keyboard and mouse and neither responds
  • ✗ USB 2.0 controller, so no benefit from a USB 3.0 or newer port
  • ✗ Perixx does not publish a polling rate, so competitive gaming latency is unspecified
  • ✗ No listed BIOS or pre-boot support, which matters for entering setup on old hardware

Manufacturer description

The Perixx PERIPRO-401 solves a problem every retro PC builder eventually hits: you have a beloved PS/2 keyboard and mouse, and a modern motherboard with no PS/2 headers left. This black adapter gives you two color-coded PS/2 female ports (purple for keyboard, green for mouse) feeding into a single USB 2.0 male connector, so both legacy peripherals occupy just one USB port on your PC or laptop. What separates the PERIPRO-401 from passive wiring adapters is the built-in USB controller IC. That onboard chip handles the PS/2-to-USB protocol translation itself, which is why it works with…

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SpecPicks Verdict

SpecPicks scored Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse using a rating × review-volume × price-fit model applied to published specs and reviews across the keyboards & mice category. Perixx's keyboards & mice 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 keyboards & mice 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.

Frequently Asked Questions

Will this work with an old PS/2-only keyboard, or does the keyboard need to already support USB?

It works with PS/2-only devices. The PERIPRO-401 has a built-in USB controller IC that performs the protocol conversion, unlike passive adapters that require the keyboard to already contain USB circuitry.

Can I plug in both a keyboard and a mouse at the same time?

Yes. There are two PS/2 female ports, purple for the keyboard and green for the mouse, and both run through the single USB male connector, so the pair uses only one USB port on your machine.

Does it matter which PS/2 port I use?

Yes, match the colors. Perixx assigns purple to the keyboard and green to the mouse, which follows the standard PS/2 color convention, and swapping them will keep the devices from working.

Is this compatible with a KVM switch?

Perixx states the PERIPRO-401 supports the PS/2 port of a KVM switch, which is why it is marketed toward industrial and professional setups still running legacy peripherals.

What comes in the box and is there a warranty?

The package includes the PERIPRO-401 adapter and a manual, plus a 12-month limited warranty. Check the product listing for current warranty terms and regional coverage.

Key Features

  • PS/2-to-USB ADAPTER: Adapter for those who like to continue using their PS/2 devices. Connect mouse and keyboard to your computer by using only one USB port
  • SUITABLE FOR PS/2 DEVICES: Two PS2 female ports, purple for keyboard and green for mouse, and one USB male port.
  • BUILT-IN USB-IC: You can use PERIPRO-401 to connect your keyboard and mouse with PS2 interface to USB 2. 0 port at PC or laptop. It also supports PS/2 Port of KVM Switch.
  • UNIVERSAL PURPOSES: Fits with industrial and professional needs
  • PACKAGE INCLUDES: Perixx PERIPRO-401 adapter, manual; 12-month limited

Full Specifications

BrandPerixx
ColorBlack,Green,Purple
FinishMatte
Unit Count1.0 Count
ConnectivityUSB
Model NumberPERIPRO-401
CompatibilityPC, Switch
Input Voltage5 Volts
Nominal Power5 Watts
Warranty TypeLimited
Built-In Mediacable
Connector TypePlug In
Item Type NamePerixx PERIPRO-401, PS2 to USB Adapter - for Keyboard & Mouse with PS2 Interface - Support PS/2 Port of KVM Switch - Built-In USB IC
Item Dimensions5.85 x 0.98 x 0.55 inches
Mfr Part NumberPERIPRO-401
Number of Items1
Number of Ports3
Power Plug TypeNo Plug
PACKAGE INCLUDESPerixx PERIPRO-401 adapter, manual; 12-month limited
Compatible DevicesPC

Ready to buy?

Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse - Built-in USB Controller - Black 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 — $8.99

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

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Perixx PERIPRO-401 PS2 to USB Adapter for Keyboard and Mouse - Built-in USB Controller - Black
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