Increase productivity in business applications with the Scorpius-N4 optical mouse keypad from ioneŽ. This device is great for Laptop users who wish to have the convenience of a numeric keypad and mouse without the clutter of attaching 2 separate devices. The 19-key layout provides efficient and convenient access to your numeric keys. The non-synching number lock key allows you to use the keypad and your keyboard as separate units. Switch from mouse to keypad with the touch of a button. The 400dpi resolution optical mouse provides smooth and accurate operation. The programmable scroll wheel allows you to choose 12 out of 20 multimedia functions. System Requirements: IBM or compatible PC or Laptop USB port WIN 98SE/ME/2000/XP