Features 1. Standard USB port, support 1. 0/2. 0 compatible with PC and notebook computer. 2. Switch from digital to analog mode, with LED indicator. 3. Special design, smart and comfortable. Function 1. Win 2000/Win XP(SP2) are available. 2. Ergonomically design, get rid of your tiredness. 3. Novel and rational key location, give you the best feeling.