Soarer's adapter is really only necessary for older boards with different protocols or connectors. Many Model Ms come with PS/2 connectors, so they're easy to connect and use with many computers. Unfortunately, many newer motherboards and laptops don't come with PS/2 ports. If you wanted to use your Model M on one of these, you could use a PS/2 to USB adapter with the original cable, or get one of these to replace the cable altogether.