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.