SteelSeries Apex M500 Illuminated Mechanical Gaming Keyboard - Cherry MX Red Switch - Blue LED Backlit - Media Controls - Steel Back Plate Cherry MX Red Mechanical Gaming Switches Reinforced steel back plate construction 100% Programmable with SteelSeries Engine Fully-programmable keys and macros.Throw Depth:4 mm 100% anti-ghosting and 104-key rollover