Mechanical Gaming Keyboard Keys: 87 Switch Rating：≥50 Million Presses Key Route: 4.0 ± 0.4Mm Operation Force: 60 ± 5 G Backlight: 5-Color Rainbow With 8 Lighting Modes Interface: Usb2.0 Cable Length: 1.5M Os Support: Windows 7 Or Newer Features: Fn Keys For Multimedia Function; Fn+Win ,Win Locking Function; Anti-Ghosting Support 25 Keys Rollover;