---
product_id: 1647263
title: "AdessoADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black"
brand: "adesso"
price: "₩106757"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/1647263-adessoadp-pu21-ps-2-to-usb-adapter-connects-2-ps
store_origin: KR
region: South Korea
---

# Bus-powered convenience 2 PS/2 to 1 USB Plug-and-play simplicity AdessoADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black

**Brand:** adesso
**Price:** ₩106757
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect & Conquer: Your PS/2 devices deserve a USB upgrade!

## Quick Answers

- **What is this?** AdessoADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black by adesso
- **How much does it cost?** ₩106757 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/1647263-adessoadp-pu21-ps-2-to-usb-adapter-connects-2-ps)

## Best For

- adesso enthusiasts

## Why This Product

- Trusted adesso brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Design:** Lightweight and portable, perfect for on-the-go professionals.
- • **Power Efficient:** Bus-powered design means no extra adapters needed.
- • **No Software Hassle:** Enjoy effortless installation with zero driver requirements.
- • **Seamless Connectivity:** Easily connect two PS/2 devices to a single USB port.
- • **Universal Compatibility:** Works flawlessly with all Adesso touchpad and trackball keyboards.

## Overview

The Adesso ADP-PU21 is a versatile PS/2 to USB adapter that allows you to connect two PS/2 input devices to a single USB port. With no software installation required, this compact and lightweight adapter is perfect for modern USB computers, ensuring seamless compatibility with all Adesso touchpad and trackball keyboards. Its bus-powered design eliminates the need for additional power adapters, making it an essential tool for tech-savvy professionals.

## Description

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

## 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
- Converts 2 PS/2 devices (Keyboard & Mouse) to 1 USB port
- Supports computer USB interface to PS/2 port of KVM Switch
- Supports Bus-Power meaning no power adapter is needed
- Easy installation with no software driver required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of USB 2.0 Ports | 1 |
| Number of USB 3.0 Ports | 1 |
| National Stock Number | 5995-01-626-8401 |
| Brand | Adesso |
| Series | ADP-PU21 |
| Item model number | ADP-PU21 |
| Item Weight | 4.8 ounces |
| Product Dimensions | 2 x 1.5 x 0.5 inches |
| Item Dimensions  LxWxH | 2 x 1.5 x 0.5 inches |
| Color | Black |
| Manufacturer | AdessoInc. |
| Language | English |
| ASIN | B00008ZPED |
| National Stock Number | 5995-01-626-8401 |
| Is Discontinued By Manufacturer | No |
| Date First Available | March 26, 2003 |

## Images

![AdessoADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black - Image 1](https://m.media-amazon.com/images/I/71EYT4W6IdL.jpg)
![AdessoADP-PU21 - PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub,Black - Image 2](https://m.media-amazon.com/images/I/41nwGs6OKmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works with Gateway AnyKey keyboard
  

*by A***R on Reviewed in the United States on February 9, 2013*

Hours of research on the web and days of experimentation with two new 64-bit Win 7 computers and twenty-year-old Gateway Anykey keyboards lead me to this conclusion: Unless you bought the PS/2-USB adapter or converter with the keyboard, finding one that works with your old keyboard is a trial-and-error process.  The good news is that they are not expensive.The consensus seems to be that simple adapters do not work.  I wouldn't know, as I don't own one.  I bought the Ziotek "blue cube" converter recommended and sold by [...].  It did not work very well with my treasured AnyKey keyboards (this has nothing to do with their programmability, by the way).  In a test repeatedly typing about 250 words, from twelve to fifteen words had missing letters.  The error rate was highly variable, and from time to time it would go crazy, spitting out gibberish.  Unintentional repeats, all caps when the caps lock was not on, and more.  The computers themselves were also acting up, with improper boots etc.Microsoft's web site has a little demo that allows you to test whether your keyboard blocks certain letters when you quickly press a combination of letters.  This is important for gamers (not me) and fast typists (me).  I found that, like most keyboards, my AnyKey keyboards do that.  It appears to me that the downfall of the blue cube in my case was that they were not talking back to the keyboard to quickly reset it after it blocked certain keys.After reading the reviews here I bought the Adesso converter and all is well.  No more skipped letters or other errors, other than my sloppy typing.  Both computers have settled down also, which leads me to think that maybe the "wrong" converter can interfere with more than your keyboard.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Yessssssssss!  This one actually works with my KVM!
  

*by R***E on Reviewed in the United States on June 2, 2013*

I am a cheapskate, so even while everybody else was switching over to USB for everything, I still kept my older systems that have PS/2 connectors for Keyboard & Mouse.  I did however switch over to DVI for video connections, because that does really provide a significant performance advantage over the older VGA type connections.  By I have multiple systems here so I went and bought an IOGEAR GCS92 2-port DVI+PS/2 KVM switch, and that has worked well for me.  Recently however I purchased a Foxconn A3700 book-sized system to use as an HTPC.  It works great, but in doesn't have any PS/2 ports... only USB... and I had real trouble finding anything that would allow me to hook one of the system ends of the GCS92 into the Foxconn box in such a way that _both_ the keyboard and the mouse would actually work.  t is easy to find inexpensive (cheap?) PS/2 to USB adapters, but as I've learned, most of these are "passive" and although they may work if you are wiring your keyboard and mouse to them directly, they definitely do not work if try try to use them with various KVMs, in particular the GCS92.  What I've learnd is that for this kind of setup you need an "active" adapter.  I wasn't sure if this specific thing was "active" but it was less expensive than the other other ones that I found that are "active" (which are made by Ziotek) so I ordered one and I am pleasantly surprised to see that yes, it _does_ work perfectly with my KVM.  From that fact I am inferring that this one _is_ "active", but I don't don't know for sure.  All I do know is that it works just fine and I'm a happy camper.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Great adapter, but not very rugged.
  

*by M***E on Reviewed in the United States on December 4, 2011*

I have and IBM Model M that I wanted to use with my desktop computer.  I already have a cheap membrane keyboard in the ps/2 port and got this adapter so that I could keep my multimedia keys (volume, play, pause, etc.) and hotswap my Model M when I wanted to do serious typing.  This adapter works great for that.I would have given it five stars, but the box in the middle of the cord is somewhat flimsy.  No one else has pointed this out, but if you're not careful with it, the plastic housing might come apart or the cables might pry it open if twisted too hard.  However, if you don't want to move it around much and just plug it in and forget it, the adapter will be fine. If you want to travel with this adapter, you should be mindful of its cheap construction.If you want something more durable, you might try this adapter instead: 
  
Ps/2 Keyboard & Mouse To Usb Adapter







  
  
     It looks like it may be more solid.  It is slightly more expensive though.  I have not used it, but others claim it works with an IBM Model M.  ClickyKeyboards.com also sells this item.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-02*