The GoldTouch keypad, beige, USB with built in 2 port USB hub has a total of 22 keys, it has the standard 17 number pad keys plus a '00', an Escape, a Tab, a backspace and a Shift/Fn key. The Fn key also gives all the keys a second function.
The keypad has brown, tactile, Cherry MX mechanical switches, and it's Num Lock status is independent from the systems making it perfect for use with embedded keypad keyboards.