What are Mouse4 and Mouse5 keys?

[zedOFF]

The title already says everything that I wanted to ask

[Timelord Sheep]

some mouses have more keys than others

Usually the Mouse4 and Mouse5 keys are the little buttons on the side of your mouse if you have them

[整慎具聪明]

Brazil aqui guys

[hamoodhabibi]

the little things in the left bottom of ur mouse