This Mini USB Wireless Keyboard for Raspberry Pi and other HTPC systems is multi-functional, including the standard QWERTY keyboard design as well as a variety of Pi-specific function keys.
This is what justifies the 2.4GHz processor, which comes with pre-programmed functionality to compliment any Raspberry Pi or HTPC project.
The touchpad on this keyboard is multi-functional, allowing you to zoom, scroll, click, grab, and even rotate depending on how your fingers are pressed against it, giving you complete control despite the lack of a mouse.
The actual keys on the keyboard have a key force of 100GF and a key travel of 2mm, which is much shallower than ordinary keyboards but still allows you to feel each key press.
It also has anti-ghosting to reduce button double-presses, as well as 12 custom-programmable multi-media keys distributed logically and conveniently around the board.