A4Tech G800V Anti-Ghosting 8-Key Rollover USB PC Gaming Keyboard with Wide Palm Rest Super Fast Ghost-Key Prevention Gaming Keyboard ,Advanced 8-key rollover to avoid ghost key Ideal for all online game and console game, such as CS, DOTA, World of warcraft, etc. Super-Combo15 ,Custom macros with 15 fully programmable keys Perform stunts to win the games effortlessly,Disable Windows key during games ,Avoid accidentally pressing the Windows key on keyboard and improve your gaming experience 1 Click to shift 5 modes ,No driver required to shift modes with dual-color indicator ,Response time up to 1 ms / 1000 Hz ,8 Times faster than normal USB keyboard (8 ms/ 125 Hz)