Bluetooth mice differ from USB mice only in the way they connect to your computer. Instead of a dedicated receiver you plug in, it uses your computer's bluetooth antenna to pair with the mouse.

The MX 5500 desktop’s receiver can also be used as a Bluetooth hub, enabling other Bluetooth devices, such as a Bluetooth-enabled cell phone or a PDA, to connect to a computer through the hub.

ok, so my cousin and he's friends have this challenge for each other ... convert a USB input device (mouse/keyboard) to bluetooth instead. I think there are some in&out or tacos at stake but ...

A mouse is an essential element for many people using a computer. Here are four wireless mice that offer horizontal scrolling and device switching.