Feature:1. 23 Full Size Keys: The number pad has 23 full size number keys, easy to identify, suitable for data entry and improve accuracy2. Convenient and Practical: The number pad contains backspace key, one key home key, tab key, e mail key, one key calculator key and number lock, suitable for accounting3. Comfortable Touch: The number pad is ergonomically designed to avoid wrist strain. Just plug in the USB to use, no drivers or installation required4. Low Noise: Membrane key switches can reduce typing noise, improve response. Has a life span of 5 million keystrokes5. Scope of Application: suitable for laptops and desktop computers with for Win 2000, for Win XP, for Win Vista, for Win 7, for Win 8, for Win 10 or for Linux operating systemsSpecification:Item Type: Number PadMaterial: ABSInstallation Method: Plug and Play Without DriverProduct Name: Multifunctional Numeric KeyboardWire Length: Approx. 1.5meters/1.6ydNumber of Keys: Multifunction 23 KeysConnection Method: USB2.0 Wired ConnectionButton Life: 20 Million TimesSystem Requirements: For Win XP, for Win 7, for Win 8, for Win 10.Package List:1 x Number Pad 1 x User Manual