If keyboard and mouse not response，please try following tips：
1.Turn off all 2.4G devices in your room and make sure the product indicator section is as close as possible to the Nano receiver.
2. Repair the keyboard:
(1) Unplug the receiver of computer.
(2) Press “ESC” and “= +” buttons about five seconds until the power indicator display red.
(3) Plug the receiver to the computer quickly before the red light is off at the same time.
3. Repair the mouse:
(1) Turn off the power switch at the bottom of the mouse.
(2) Unplug the receiver from the computer port.
(3) Turn on the power switch at the bottom of the mouse.
(4) ①Press the wheel button, the left button and the right button simultaneously. ②Then keep the USB Nano receiver near to the indicator light of the mouse, the red light will flash. ③Plug the receiver to the computer, keep the indicator light of the mouse near to the USB Nano receiver again.
(5) Note: If the code is not successful, please repeat these steps.
Make sure this fitsby entering your model number.
Wide Compatibility: It can work with your PC, desk computer or notebook. Compatible with Windows XP / ME/ Vista / 7 / 8 /10 operating systems.
Whisper Quiet Button: Suspended chocolate buttons, feel more comfortable, silent to press, its low tone reduces the interference for work and creates a comfortable working environment.
2.4G Wirless Connection: 2.4G technology provides a cable-free & clutter-free connection, operating distance 10m. Simply insert the nano USB receive into your computer and use the keyboard instantly.
Humanized Design for Smooth Typing:The ergonomic keycaps perferctly fit your finger, and produces low noise, comfortable touch feeling. Rubber Pads on back provide optimum comfort and securely keep the keyboard in place. Quite clicks also avoid bothering to others. Perfect for office and family use.
Long Time Operation:Separate ON/OFF switch and Smart auto sleep feature design for power saving With 2 AAA batteries.