The Goldtouch Number Pad can be positioned anywhere you choose on your desk which means you can make your work-zone more comfortable and reduce the risk of RSI. It is particularly useful for left-handed users as it brings the function of entering numbers to your stronger hand.The Goldtouch Number Pad can also add important functionality to laptop computers, eliminating the need to use the 'dual-function' number and mathematical function keys in the built in keyboard.The black version features advanced calculator functions and has 2 extra USB ports allowing eg a USB keyboard and mouse to be plugged into your PC via the keypad itself.Features: Allows for a flexible workzoneIdeal for number crunchersA great advantage for left-handersEnhances laptop functionalityAvailable in PS2 or USB