Description Specifications Mfr Part Number: IM-KBCOBM1 Features: Concise 87 key TKL layout design. Aluminum top plate, scratch resistant Advanced double-shot backlit keycaps, shine-through, never rub off Cherry MX Blue Switch equivalent switch. 60 million times operation Rainbow color LED backlight customized light effects Auto sleep function, LED lights go off when keyboard is idle for 10 minutes. Press any key to wake up Multi-function FN key combination supported N-Key rollover, anti-ghost Interface: USB 2.0 Keys number: 87 keys Key route: 2.4mm (blue switch), 2.0mm (brown, red switch), 1.5mm (black switch) Strength: 60g (blue, red and brown switch), 80g (black switch) Rated voltage/current: DC 5V/<200mA Operation platform: Windows 2000/ XP/ Vista/ 7/ 8/10/Mac OS Dimensions(WxLxH): 128.70 x 359.00 x 38.24 ± 0.2 mm Weight: 660.0 g Shortcut keys for multi-function: FN 1= Game Light Model 1 (FPS) – ASDW Arrow Keys ESC keys light on FN 2= Game Light Model 2 (CF) – ASDW Ctrl-L Shift-L Alt-L Space RGQEB 1-5 Tab F1-F3 Home End PgUp PgDn PrtSc keys light on FN 3= Game Light Model 3 (COD) – QWERTASDFGCV 1-7 Ctrl-L Shift-L   keys light on FN 4= Game Light Model 4 (RTS) – QWERASDGXZFKLHMNUYTP Space 1-0 Ctrl-L Shift-L Alt-L keys light on FN 5= Game Light Model 5 (LOL Full) – QWER DGFBV Ctrl-L Alt-L Tab Space ~ 1-6 Esc keys light on FN 6= Game Light Model 6 (Car Race) – ASDWR Arrow Keys Ctrl-L Shift-L Alt-L keys light on FN 7= Game Light Model 7 (NBA) – AFSWRE Space Arrow Keys ZXCV 1234 Shift-L Ctrl-L Alt-L keys light on FN 8= Game Light Model 8 (LOL Simple) – QWERDFB 1-6 light on FN 9= Customized Light Model 1 – self design FN 0= Customized Light Model 2 – self design