Easy to Use: This pad is consisted of 18 keys and all the basics including backspace, page up and page down. The Num Lock button of wireless numeric pad is include with this model, which makes the layout ideal for gamers. Note: NOT fully compatible with Macbook OS system. Number keys part works fine, but the Function keys do not work. Convenience: The wireless transmission is very convenient to USB receiver on PC keypad. This USB number pad uses a 2.4 GHz receiver. The receiver is extremely compact, it looks like nothing more than a tiny nub sticking out of your computer, and is even more compact than the smallest flash drives. Holding the 1/END key will enable. Low Battery : Once laptop keypad set up, the USB numeric keypad will wake from sleep anytime you press a key, and go to sleep after 20 minutes of inactivity. An AAA batteries will last you for several months, no worries about dying anytime soon. How to Use: Just plug and play, with up to 33 feet working range. Just insert the provided USB receiver into USB interface of your computer, no drivers needed. It's easy to get started with wireless number pad - you just plug the receiver into a USB port and start crunching numbers right away. Portable and Compact: Easy to take with you, so you can work confidently and quickly-wherever and where. The keys are standard matte-black caps with slightly rounded faces on wireless numeric keypad. This makes it easy for your hand to find its place, and doesn't let them show any finger prints. The back is tilted upright, so it feels natural to press the buttons, or rest your fingers on it when not in use.