Possible issue you may have.

Part 1: Basic Troubleshooting

1. Can't find the USB receiver:
   1. 1. If it's a keyboard - mouse set with only one USB receiver, it's located at the bottom of either the keyboard or the mouse.
   2. 2. If it's just a keyboard, it may be in the accessory bag, or at the bottom or top of the keyboard.
   3. 3. If it's just a mouse, it may be in the accessory bag or at the bottom of the mouse. Some products may vary slightly, please refer to the instruction manual for details.
2. Can't find the charging cable: The charging cable is in the packaging box and might be wrapped by the box. Please carefully unpack and look for it. When you receive the product, check if all accessories are complete. We conduct strict quality inspections before shipping, and the probability of missing accessories is basically zero.
3. Ensure the usage environment: Make sure the usage environment is dry and the temperature is suitable.
4. Mouse usage: Ensure the mouse is used on a flat and smooth mouse pad.
5. Power supply: Ensure the wireless keyboard and mouse have sufficient power.
6. Connection and switch: Ensure the mouse is paired with the USB receiver, the USB receiver is plugged into the device, and the switch of the “keyboard”/“mouse” is turned on.
7. It may your computer and other device failures: Just to fix it.
8. Computer Set: Press “Win + I” simultaneously. In “Settings” - “Devices”, delete the keyboard or mouse. Then unplug and replug the USB port of the “keyboard”/“mouse”, and add the “keyboard”/“mouse” again.
9. Too many computer applications: Close the applications that are not in use on the computer.
10. The computer is stuck: Restart the computer, turn off and then turn on the “keyboard”/“mouse” switch again, and plug the USB receiver into the computer's USB port again.
11. The charging indicator of the keyboard or mouse doesn't light up: If the indicator is broken, you just can't check the charging status, but it doesn't affect normal use. If the charging port or the battery is broken and you can't repair it, you can only replace the keyboard or mouse with a new one.
12. Battery tips:
    1. When not in use, turning off the switch or the light can effectively increase the usage time.
    2. When charging the battery, make sure the charging port is tightly connected.
    3. Do not use a mobile phone fast charger (high - voltage) to avoid damaging the lithium - ion battery.
    4. If the lithium - ion battery is not used for a long time and becomes “dead”, use a voltage lower than DC:5V, such as charging with a computer, to activate it, or replace the battery.
    5. The battery can't be charged: 1. Using a mobile phone fast charger may damage the lithium - ion battery. 2. Replace another charging cable to charge the keyboard/mouse; 3. Change another computer USB port to charge the keyboard/mouse; 4. Check to see if the indicator next to the keyboard Type-C charging port is lit red or check to see if the mouse charging indicator light is lit.
    6. If the indicator is off, please check whether the connection between the wireless charger, data cable, charger, and power supply is not in good contact, and it is recommended that you reseat it.
13. The wireless USB receiver malfunctions: Turn off the interfering wireless devices, such as microwave ovens, smart home devices, wireless gaming devices, etc. Or re - pair. The pairing steps for the “keyboard”/“mouse” are:

Ensure enough power before pairing. Keep device & receiver close, avoid obstructions for stable signal. Read receiver's manual carefully as different ones vary. Also, stay away from 2.4GHz interference sources like routers & Bluetooth devices. USB receiver not plugged into device, the USB receiver is not inserted into the USB port and operate it in sequence.

Mouse pairing steps:

Step 1: Turn the switch at the bottom of the mouse to the switch position with the sun logo;

Step 2: Press and hold the mouse wheel and right button, the mouse RGB lights start to flash;

Step 3: Insert the USB receiver into the computer and the pairing is complete.

Keyboard pairing steps:

Step 1: Turn on the keyboard switch;

Step 2: Press and hold the ESC key and the K key at the same time, the indicator light starts to flash;

Step 3: Insert the USB receiver into the computer, and pairing is complete.

Pairing video link:

https://www.amazon.com/ask/questions/Tx1TY475879FCWE/ref=ask_dp_dpmw_al_hza

Part 2: Keyboard Common Troubleshooting

1. Can't find the keyboard: Connect the keyboard's USB tightly to the computer device interface, or change the computer device's USB port, or clean the computer's USB port.
2. The keyboard doesn't work: The keyboard is locked, try unlocking it with the unlock key or the Fn key combination.
   If the WASD button of some products cannot be used, please press FN+W to unlock it.
   If the numeric keypad is not available, press the Num key to unlock it.
   If the Windows key combination shortcut cannot be used, please press Fn+Windows key to unlock it.
   Such as K20 keyboard is not available, press Fn +F11 to unlock. Different keyboards have different shortcuts.
3. Keys don't work: The keys need to be cleaned.
4. The keyboard light doesn't work: Read the user manual to adjust the lighting.
5. The battery drains quickly: When not in use, turning off the mouse switch or the mouse light can effectively increase the usage time.
6. Large keys don't work: Check if the spring at the bottom of the key is aging, resulting in insufficient elasticity, if the balance bar has fallen off, or if there are debris or dust at the bottom of the key, preventing the key from rebounding. Re - install the spring and balance bar or clean the dust to solve the problem.

Part 3: Mouse Common Troubleshooting

1. Can't find the mouse: Connect the mouse's USB tightly to the computer device interface, or change the computer device's USB port, or clean the computer's USB port.
2. The mouse sensitivity deteriorates: The mouse DPI parameter may be incorrect. The two keys on the top of the mouse are DPI + and DPI - respectively. Use DPI to adjust the mouse cursor movement speed.
3. The lens path at the bottom of the mouse is contaminated: Clean it with anhydrous ethanol.
4. The mouse RGB light: The mouse RGB light is a self - cycling RGB backlight and cannot be customized.
5. The light at the mouse scroll wheel position doesn't light up: It only lights up the mouse scroll wheel when charging, and the charging indicator will be on.
6. The mouse button doesn't work: The distance between the mouse button and the micro - switch on the circuit board may be too far, or the rebound ability of the click switch has decreased after a period of use. Open the mouse and stick a plastic piece of appropriate thickness under the mouse button. The thickness should be determined according to actual needs. After that, it can be used.
7. The mouse button can't bounce back normally: This is caused by the breakage of the bowl - shaped contact piece in the micro - switch under the mouse button. Open the micro - switch, carefully clean the contacts, apply some lubricating grease, and then install it to use.
8. The mouse wheel doesn't work: Clean the mouse scroll wheel, check for software conflicts (whether it only doesn't work in specific software), and reset the mouse wheel movement line number setting.
9. Aging problems such as the photoelectric board being worn or in the wrong position: Just replace the mouse with a new one.
10. Check computer system settings: Such as disabling the touchpad or touch - screen, disabling USB selective suspend, turning off enhanced pointer precision, turning off the non - active window scrolling function, turning off the mouse pointer trail function, turning off the Windows service check, etc.

Warranty

1. One - year warranty. Contact us within one year of the warranty period, and we will replace it with a new one.
2. Not covered by the warranty: Loss, misuse, wear and tear of the USB, and problems not caused by product quality.

If the above methods still can't solve your problem, we have a one - year product quality warranty. Please feel free to contact us at any time, and we will do our best to solve it.

Thank you for your support. If you are not satisfied, please contact us first. We are dedicated to serving you.

If you are satisfied, please give us ⭐⭐⭐⭐⭐. We will be grateful.

Best regards!

RedThunder Team

E-mail: support@redthunder.online