HP Wireless Elite Keyboard v2 Brand new, and authentic HP products ship from, and are sold by Amazon.com (check above) Sleek, clean lines create the ideal, ultra-slim keyboard shape. Full-size keyboard includes fast-access hot keys, versatile function keys and built-in number pad. Minimum system requirements : Available USB port; Compatible with Microsoft Windows XP and Vista/7 Typing is smooth with quiet, low-profile keys and stand-alone design keeps the dirt out and your keyboard cleaner. Bouncier, more responsive key strokes promote faster typing and angle/height adjustable legs promote a more comfortable wrist posture. Adjustable keyboard height with 2 different positions and 4 hot keys.Works with most desktops and notebooks, 2.4 GHz wireless connections give you the freedom to move up to 30 feet away. Plus, the battery life indicator light never keeps you guessing. Dimensions (W X D X H) inches :Keyboard: 17.28 x 6.02 x 0.61 ; Mouse: 4.53 x 2.5 x 1.4 ; Nano Dongle: 0.74 x 0.57 x 0.24 . 2 AAA trial batteries included; best with Polaroid AAA batteries.