This product is a 61-key mechanical backlight keyboard, supporting Bluetooth and wired dual-mode connection with the device, using a dual-color key cap, gorgeous color backlight, hardware backlight control, FN multi-functional combination keys and other design. When you receive product connection USB and find that you can't enter anything, you just press Fn + Tab to switch to wired mode. In order to ensure normal use, please charge the product before using it for the first time. When you are not using the product, please adjust the back switch to OFF state to save power. In wireless mode, when the light is not bright but can be input normally, don't worry, it is to remind you to charge the product, after full charge, unplug the USB data line switch and reopen it. If you need technical support, please contact the seller. Email 2680620645@qq.com When charging, the charger should pay attention to the voltage 5V and current 2A. It can also be directly plugged into the computer to charge. When charging, the red light of the grid key is always on, full of extinction, and full of about 3 hours. This product has no operation for 1 minute, the backlight of the keyboard is automatically closed, no operation for 5 minutes, the keyboard enters standby state, no operation for 10 minutes, the keyboard enters deep dormancy, and any keystrokes are needed to wake up the keyboard product specifition : layout: 61 keys Backlight: RGB Material : ABS keyboard color : black switch color : blue and red dule mode: bluetooth and USB voltage : 5V Packing details : keyboard * 1PCS Data Line 1*PCS for Wired Mode Connection and Keyboard Charging manual 1*PCS.