. Interface USB Keycap type Slim keycap Function keys Yes, 12 ( 8 audio, 4 Internet ) Backlight Key On / Off Yes, 1 key Anti-Ghosting Design Yes, 19 keys Adjust Backlight Brightness（ㄧ, ＋） Yes, 2 keys Copilot Yes Cable length (meters) 1.8 m Other - Weight (grams) Approx. 470 g Dimensions (W x H x D) mm (inches) 446.40 x 133.31 x 23.25 ( 17.57" x 5.25" x 0.92" ) System requirements Windows® 8, 10, 11 or later / Mac OS X 10.8 or later / Available USB port Colors Black What's included SlimStar 820 (Wired keyboard)