All of these accessories use proprietary 2.4GHz wireless technology instead of Bluetooth, which means you'll need a free USB port to accommodate the accompanying transceiver.
The technology world has obligingly created swarms of gadgets and accessories this year that fall into these categories, starting with MP3 players, global positioning systems (GPS) and laptop and cellphone cases.
"As more hardware companies announce plans to incorporate Intel's Thunderbolt technology into their products, we aim to create quality accessories that take advantage of Thunderbolt's blazing fast speeds and other benefits, " said Martin Avilla, general manager of Belkin's core business unit.