tips 1:If the WIN key doesn't work, the WIN key lock function is usually triggered, and can be restored by pressing FN+WIN tips 2:3-stage toggle switch: 2.4G on the left, Wired in the middle, and Bluetooth on the right tips 3:Press and hold the FN key, “R” to 2.4G, ‘Q, W, E’ to Bluetooth mode. ‘W’ to WINDOWS mode, ‘A’ to MAC mode. ️✍ Product Specification: ✅ Connection type:USB type-c/2.4G/Bluetooth ✅ With Gasket construction ✅ Number of keys:103 keys ✅Pluggable mechanical switch ✅Support N-key rollover ✅Backlight: RGB ✅ Lithium battery:rechargeable lithium battery 10000mAh ✅Work Voltage: 5V ✅Work current: ✅Interface type:USB anti-interference cable ✅Key life: > 50 million times ✅Key type: mechanical switch ✅Lighting Effects: 22 Types ✅Size:410mm(L)*143mm(W)*43mm(H) ✅Compatible system:MAC/Vista/Win7/Win8/Win10/Android ️✍ Please note that you need to pay attention to: 1️⃣ There are two different switches: White Horse Switch/Green Switch (If you need detailed information about different axis bodies, please contact the seller) ✍ Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2. Please allow 1-3mm measuring deviation due to manual measurement. 3. Any problems in the transportation process are broken, and the video is provided to us. We will reissue it for you. ♥ Thank you very much! With best wishes for your happiness.