Memory : build-in Flash 4M bit
6-N key & Full-N key switching function
2 x USB 2.0 Port High Speed hub 
Headohone out and microphone-in jacks
Single lighting LED color;
Gaming duster with anti-ghosting capabilility
1.8M cable with gold plated connectors, PP braided and ferrite core attachment
PC mode/Game mode with windows key disabled feature
Full color backlit illumination with 5 levels backlit and 7 LED mode adustment
Multi-Media Keys for volume control, play/pause, and skip tracks
Mechanical key switch with 60 million keystrokes cycle