The Moonblade 2 wireless side keys can be replaced by themselves.
First, after purchasing accessories (including side keys, screws, and screwdrivers), remove the four screws from the mouse base and remove the side keys on the side of the mouse.
Then, put in the new side keys, fasten them with screws, and finally put the screws back on the mouse base.
When replacing the side key, be careful not to damage other parts or lines.