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Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB… competes with other Keyboards & Mice products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Keyboards & Mice category for alternatives.

Adesso

Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black

Name: Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black
Brand: Adesso
SKU: B00008ZPED
Price: 12.18 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-21

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. View full credentials →

$12.18

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🛒 See live eBay price Also on Amazon — View Current Price → Compare to similar keyboards & mice

*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.

Bottom line: The Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black is a specs-and-price decision rather than a crowd-consensus one in the keyboards & mice category, priced around $12.18. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Easy installation, no software driver needed
✓ Backed by Adesso'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

The Adesso ADP-PU21 USB to PS/2 adapter is the best solution for those who want to use legacy PS/2 devices on new USB systems. It allows you to connect a PS/2 mouse and keyboard through the USB port on any computer. Perfect for Notebook Laptop users.

SpecPicks Verdict

SpecPicks scored Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the keyboards & mice category. Adesso'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 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.

Key Features

Easy installation, no software driver needed
Use Existing PS/2 Input Devices on New USB Computers
Connect Two PS/2 Input Devices to One USB (PC) Port
Works With All Adesso Touchpad and Trackball Keyboards
Compliant with USB 1.0/1.1 Revisions
Supports both UHCI and OHCI specifications

Full Specifications

Brand	Adesso
Color	Black
Finish	Black
Unit Count	1 Count
Connectivity	USB
Model Number	ADP-PU21
Compatibility	PC, Switch
Built-In Media	Computer Peripherals^Cables and Cable Adapters^USB Cables^
Connector Type	PS
Item Dimensions	2 x 1.5 x 0.5 inches
Mfr Part Number	ADP-PU21
Number of Items	1
Number of Ports	1
Power Plug Type	No Plug
Compatible Devices	PC
Warranty Description	1 year
Item dimensions L x W x H	2 x 1.5 x 0.5 inches
Specific Uses For Product	personal
Global Trade Identification Number	00783750000246, 00783750001601, 07837500016018

Ready to buy?

Adesso ADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black 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 2026-04-19. Price and availability subject to change.