Logitech Classic Desktop MK100 The compact, space saving keyboard features a standard layout with full-size keys and a number pad to keep you comfortable without taking up a lot of space Liquid drains out of the keyboard, so you don?t have to worry about accidental spills.* (*Tested under limited conditions; max. 60 ml liquid spillage; do not immerse keyboard in liquid.) Thin profile helps place your wrists in a neutral position for a more comfortable typing experience Full-size mouse gives you comfort and optical precision - and plugs into your PS/2 port Quality and reliability built into more than a billion mice and millions of keyboards, more than any other manufacturer