How to Use: Can be wired, can be wireless, can be connected via BT Wired: FN+Y wired mode, plug and play Wireless: Press and hold the FN+Q channel indicator to flash quickly, and then plug the USB2.4G connector into the computer's USB port. (The light must be flashing before plugging in the USB adapter) BT connection: The name is BT3.0 Keybpard/BT 5.0 KB FN+E= BT channel 1 green indicator FN+R= BT channel 2 blue indicator FN+T= BT channel 3 yellow indicator Specification: Item Type: Mechanical Keyboard Material: ABS Color: White Connection Method: Support Wireless 2.4g, BT 3.0 5.0, Type C Wired Lighting: Monochromatic White Light, Multiple Lighting Modes Conflict of Keys: No Conflict for All Keys Battery Capacity: Built in 1800mah Lithium Battery (included) Ergonomics: Support Working Voltage: 5V DC Operating Current: 300mA (maximum) Standby Current: 0.5mA Compatible Systems: for Windows2000, for ME, for XP, for Vista, for Win 7, for HarmonyOS, for Win 8, for Win 10, for Android, for OS X Package List: 1 x Mechanical Keyboard1 x Adapter 1 x Key Puller 1 x Data CableSIMPLE OPERATION: Multiple devices, free to choose and switch, connect unnecessary devices through Fn+Q/W/E/R/T/Y switching. LONG BATTERY LIFE: Built in 1800mAh high capacity rechargeable lithium battery for long lasting battery life, charging can be taken into account when wired connection, quick response. ERGONOMIC DESIGN: Adopt ergonomic design, blue switch, linear action switch, red switch, brown switch four options to choose from, giving you a different feel experience. 64 KEYS: 64 key layout, retains the functions of a complete keyboard, small and reasonable, easy to carry. TRIPLE MODE: The mechanical keyboard supports wireless 2.4G, BT 3.0 5.0, Type C wired connection in three modes.