There is wear/fatigue on the wire very near the mouse end. I've been slowly patching the wire over time with soldering - each time the closer it gets to being unfixable or reaching towards 'inside' the mouse where fixing it will be hard or impossible.
The wire has to be replaced ideally in whole, from the point it starts inside the mouse (with a white 4-5 piece of wires connection) to the end (of the USB connector to the computer).
So I wonder if there is a way to get a replacement of the whole thing? Or at least the inside-the-mouse connector to a certain length? Are other mice types identical in the connector of the inside?