Basic Parameters: -Model: MK13 *Frequency: 48Mhz -Switch Type: real mechanical switch *Size: 432*152*31(mm) -Connection Type: Wired *Full key no conflict: Support -Interface Type:USB *Ergonomics: support -Operating Voltage: 4.5-5.5V *Backlight: Colorful -Current: 200mA *Layout: 104 keys Multimedia and special function keys: -FN+Esc —Restore factory settings ( press and hold for about 3 seconds ) -FN+WIN —Lock / open WIN, APP. WIN Indicator light is light on (lock) / off (open), default open -FN+W —W S A D is interchanged with ↑↓←→, default normal. -FN+PRINT —6KEY and full KEY switch ( default full key non-conflict, N indicator in the upper right corner lights up) -FN+APPL — Adjust LOGO lighting, ( bright, breath, off, default bright) -FN+HOME — Backlight recording mode, to edit the backlight ( except for FN and func tion conversion indicator) -FN+ ← Backlight flow to the left ( only for left and right flow lighting effect ) -FN+ → Backlight flow to the right ( only for left and right flow lighting effect ) Button and Function Key Description: -Right knob ( 6 functions in total ) -Turn left-last song -Turn right-next song -Press down-play / pause -Press down and turn left-decrease volume -Press down and turn right-increase volume -Press and hold on for 4 seconds-mute/unmute -Left knob ( 6 functions in total ) -Turn left-brightness weaken ( total 5 level ) -Turn right-brightness enhance ( total 5 level) -Press down-switch 19 kinds backlit mode -Press down and turn left-Increase the backlight speed, and the indicator flashes when the speed reaches to limit -Press down and turn right-Slow down the backlight speed, and the indicator flashes when the speed reaches to limit -Press and hold on for 4 seconds-turn off / on the backlight