Lost MX Master 3 USB Dongle – (SOLVED)

The MX Master’s USB dongle is very small. In this guide, we walk you through what to do if you lose or misplace your USB receiver.

Solution 1 – Use Bluetooth

The MX Master is a wireless mouse with different connectivity technologies. The one thing that all the different versions – 1, 2, 2s and 3 have in common is Bluetooth.

If you lose your dongle and have Bluetooth on your laptop, you can still connect to it and work as you would normally.

Most desktop PCs don’t have built-in Bluetooth. In this case you could buy a Bluetooth dongle and get up and running in no time.

TP-Link USB Bluetooth Adapter for PC(UB400), 4.0 Bluetooth Dongle Receiver Support Windows 11/10/8.1/8/7/XP for Desktop, Laptop, Mouse, Keyboard, Printers, Headsets, Speakers, PS4/ Xbox Controllers

There have however been many reports of mouse lag with Bluetooth. And in this case, it may be worthwhile to consider solution 2.

Solution 2 – Purchase a replacement receiver

Logitech USB receivers are easy to replace.

But you have to buy the correct one as the two different receiver technologies – namely Bolt and Unifying – are not compatible with each other

The table below show which receiver works with which product.

MouseUSB Receiver
MX MasterUnifying
MX Master 2Unifying
MX Master 2sUnifying
MX Master 3Unifying
MX Master 3 for BusinessBolt
MX Master 3sBolt

Note that there are two different types of MX Master 3 mouse products. To identify which one you have, turn it upside down. In the case of the MX Master 3 for business the picture below shows what it looks like.

And in the case of the MX Master 3 there’s the familiar Unifying logo as well.


If you lost the USB dongle receiver for the MX Master 1, 2, 2s or 3 mouse, it’s easy to get a replacement after you identify which one you need. In this post we have identified the different receiver type for each mouse. Alternatively you can simply use Bluetooth and no dongle is required in this case.

Logitech G703 Lightspeed Wireless Gaming Mouse W/Hero 25K Sensor, PowerPlay Compatible, Lightsync RGB, Lightweight 95G+10G Optional, 100-25, 600 DPI, Rubber Side Grips - Black