LIFETIME RISK-FREE WARRANTY -- We promise a Life-time Money Back or Free New Replacement guarantee if you received defective products or have any questions with this wireless keypad and mouse combo PLUG & PLAY SUPER EASY TO USE -- The Acedada wireless number pad and mouse combo use latest 2.4GHz wireless technology, just Plug and PlayNo drivers need to be installed. Mouse & Numpad share ONE USB receiver. Do not occupy other USB port.NOTE: The USB Receiver is inserted in the battery compartment of the numeric keypad or mouse COMFORTABLE & MULTI-FUNCTION WIRELESS NUMBER PAD -- Advanced scissor-switch construction keys offer a quiet tactile response. Quick rebound action and allow fast data entring without missing a key. Supports NumLock, ESC, Tab, Delete etc. With shortcut key which can open the computer calculator directly. The Multi-Function 22 Keys Wireless external number keypad for laptop is more unique than most keyboards POR