How to Open Your Logitech MX Master

Written By: Clay Eickemeyer

Difficulty

Moderate

Steps

Time Required

10 - 20 minutes

Introduction

Use this guide to open your Logitech MX Master mouse.

Open your mouse to clean its internals, troubleshoot mechanical problems, or replace a part.

Flip the mouse's power switch into the OFF position, unplug any cables, and flip it over so the feet are facing up.
The unique shape of some mice can prevent them from laying flat. If you need to, lay your mouse on a soft towel to prevent wobble.
If you're planning to reuse your existing mouse feet, note that the adhesive needs to be thoroughly heated for them to be cleanly removed.
Apply a heated iOpener to the left and right mouse feet for about one minute each.
Alternatively, you can use a hair dryer to soften the mouse feet adhesive.
When using a hair dryer, don't heat the feet for more than a couple seconds at a time—anything hotter than just warm to the touch risks melting or warping the plastic lower case.
The information sticker adhesive may soften during this step, but you don't need to remove it.

Insert an opening pick between the left foot and the lower case.
Go slowly, and make sure the pick slides underneath both the foot and its adhesive pad. These layers separate easily.
If you plan on reusing your mouse feet, be careful not to crease them or separate them from their adhesive pads.
Slide your pick under the foot to separate its adhesive until you can grab it with your fingers.

Insert and slide your opening pick under the right foot to separate its adhesive.
Remove the right mouse foot.

For installing new mouse feet or reusing your old ones:
Use a pair of tweezers or a spudger to remove any large chunks of leftover adhesive.
Thoroughly clean the bottom of the mouse with isopropyl alcohol and a lint-free of microfiber cloth. Allow the surface to dry completely.
Peel your new mouse feet away from their adhesive liners and press them firmly into place.

Use a Phillips screwdriver to remove the four 6 mm‑long screws securing the lower half of the lower case.
Use a T5 Torx driver to remove the two 4.3 mm‑long screws securing the upper half of the lower case.

Insert your opening pick into the seam between the thumb rest and the lower case.
Pry your pick upwards and pull the upper shell away from the lower case with your free hand until you see the gesture button clip release.

Insert your opening pick between the rear of the upper shell and the lower case.
Slide your pick right, away from the thumb rest and pry upwards to release the two clips securing the rear of the upper shell.
Don't try to fully remove the top shell just yet—a cable connects the upper shell to the lower case.

Be careful not to strain the cable connecting the upper shell to the lower case.
Lift the upper shell away from the lower case and lay it on the thumb rest side.
To reinstall the upper shell, insert the gesture button clip first, then press down around the perimeter of the upper shell to engage the remaining clips.

Use the point of a spudger to flip up the white locking flap on the interconnect cable's ZIF connector.
Pull the cable straight out of its socket.
During reassembly, insert the cable with its blue tab facing up, then flip down the locking flap. The black line will align with the socket's edge when the cable is fully inserted.