Cooler Master MasterMouse MM520 Review 6

Cooler Master MasterMouse MM520 Review

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Introduction

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Cooler Master has updated their iconically unique-shaped Xornet/Spawn mice, gaming mice that were mainly designed for claw and fingertip grip users with hands on the smaller side. There are quite a few things that changed; the internals are much better than before, the shape has been remolded, the whole mouse got a little bigger, and even the materials are different. Brace yourselves, the MasterMouse MM520 has arrived!



Specifications

MasterMouse MM520
Sensor:PixArt PMW3360
MCU/Processor:Holtek HT32F52352
Switches:Omron D2FC-F-7N 20M
Wheel Encoder:Mechanical, tactile
Size:118 mm x 78 mm x 38 mm
Ambidextrous:No
Number of Buttons:6
Weight:102 g with weight, 89 g without
Polling Rate:125 - 1000 Hz
Cable Length:1.8 m
Software:Yes

Packaging


The mouse arrives in pretty standard packaging with loads of information on it, along with some render pictures. You can open up the front and check on your new addition through a transparent plastic cover. The contents of the box are the mouse itself and a small user manual. There are rumors about an extra set of mouse feet coming with the mouse in later batches, which I cannot confirm.

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Nov 14th, 2026 20:03 CST change timezone

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