SteelSeries Apex 9 TKL - Mechanical Gaming Keyboard - Optical Switches - 2-Point Actuation - Keyless Compact Size - Removable Switches - US Layout (QWERTY): Apex 9 TKLPowered by the Speed of Light OptiPoint Optical SwitchesExperience optical speed like never before. The custom-built OptiPoint optical switches harness light to detect the registration depth of your keystroke for 33% faster actuation, zero debounce and a lightning-fast 0.2ms respo