This is a good idea, although it means that the receiver must be plugged into both an electrical outlet and a mouse port.
It's a special mouse port.
Its primary use was to add a new buffer area for the dedicated mouse port.
However, a given system's keyboard and mouse port may not be interchangeable since the two devices use a different set of commands.
The system's keyboard has a mouse port built into either side.
The front of the computer has a headphone jack, volume control, joystick, keyboard and mouse ports.
There is also a mouse port, and a three-button LogiTech mouse.
There's also a mouse port on a new plug-in card, Mach 20, that is to be available later this month from Microsoft.
Otherwise the two are virtually indistinguishable, connecting to a PS/2-style mouse port, supplying virtually identical software and selling for about $80.
And many of the smaller laptops, in the subnotebook class, have eliminated the serial ports and the mouse ports to save weight.