How to Use: Can be wired, can be wireless, can be connection. Wired: FN+Y wired mode, plug and play Wireless: long press FN + Q channel light flashing, and then insert the USB2.4G connector into the computer USB port. (Must be the first light flashing and then insert the USB adapter) connection: the name is BT3.0 Keybpard/BT 5.0 KB FN+E= channel 1 green indication FN+R= channel 2 blue indication FN+T= channel 3 Yellow indication Specification: Item Type: 64 Key Mechanical Keyboard Material:ABS Color: Pink Connection Method: Support Wireless 2.4G, 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 (Ship with Inbuilt Battery) Ergonomics: Support Working Voltage: 5V DC Working Current: 300mA (Maximum) Standby Current: 0.5mA Compatible System: For Windows2000, for ME, for XP, for Vista, for Win 7, for HarmonyOS, for Win 8, for Win 10, for Android, for IOS and Other Systems Package List: 1 x Keyboard 1 x Adapter 1 x Key Puller 1 x Data CableHigh Efficiency and Energy Saving: The keyboard has a built in 1800mAh large capacity rechargeable lithium battery for long lasting battery life, which can be charged during wired connection. 64 Key: The optimized 64 key layout still retains the functions of a complete keyboard. It is small and reasonable, and it is simplified and easy to carry. Ergonomics: Red Switch, Brown Switch are optional, giving you a different feel experience, the red switch is suitable for game office, and the brown switch is suitable for home office. Ergonomic layout design, reduce wrist pressure and more comfortable to use. Free Switch: Fn+Q, W, E, R, T, Y switch to connect different devices, For Windows2000, for ME, for XP, for Vista, for Win 7, for HarmonyOS, for Win 8, for Win 10, for Android, for IOS and Other Systems. Three Mode Keyboard: Three mode connection, wireless or wired, supports wireless 2.4G, 3.0, 5.0, Type c wired three modes, the key line separation is more convenient.