Yes, the EK01 keyboard and the EM01 mouse can be synced to the same dongle. Please follow the steps provided in the instructional video linked below for detailed guidance: https://www.youtube.com/watch?v=4s1X9ac_qZA

How to re-pair the keyboard with the USB dongle:

1.For 2.4G mode (ensure the keyboard is currently in 2.4G mode):

• Insert the USB receiver into your device.
• Turn on the keyboard and press the Esc and + buttons simultaneously for 3 seconds to enter pairing mode. If the USB mode indicator light starts flashing, it means the keyboard has entered pairing mode.
• Once the keyboard is in pairing mode, quickly unplug and plug in the USB receiver.
• This will successfully re-pair the keyboard with the USB dongle.

How to reset the keyboard's Bluetooth:

2. For Bluetooth mode:

• Turn off the keyboard.
• Long press the ESC and 3 buttons together (the 3 button on the main keyboard, not on the numeric keypad).
• While holding these two buttons, turn on the keyboard until the Bluetooth channel 1 indicator light flashes quickly.
• After that, you can select the desired connection channel to connect the keyboard to your devices.

1. Ensure that the keyboard is fully charged before attempting to connect it.
2. Confirm that the keyboard is in the correct mode by checking if the corresponding connection channel light is flashing as expected.
3. If you are using the USB dongle to connect the keyboard:
   • Unplug and replug the USB dongle into your device.
   • Try using a different USB port on your device.
4. If you are using Bluetooth to connect the keyboard:
• Delete the keyboard's Bluetooth pairing from your device's Bluetooth listing.
• Restart your device.
• Repair the keyboard with your device by following the pairing instructions.
5. Attempt to connect the keyboard to other devices to determine if the problem persists.

If the problem continues, please refer to the re-pairing and resetting Bluetooth steps mentioned earlier to re-pair the keyboard with the USB dongle and reset the keyboard's Bluetooth connection.

1. Ensure that the keyboard is fully charged before proceeding with any troubleshooting steps
2. Reset the keyboard by following these steps:
   • Turn off the keyboard.
   • Long press the ESC and 3 buttons together (the 3 button on the main keyboard, not on the numeric keypad).
   • While holding these two buttons, turn on the keyboard until the Bluetooth channel 1 indicator light flashes quickly.
   • Once the keyboard has been reset, you can choose the desired connection channel to connect the keyboard to your devices.

Yes, it is normal for the space bar to be louder than other keys on the keyboard. The space bar is typically larger in size compared to other keys, which can result in a slightly louder sound when pressed. This difference in sound is considered normal and does not indicate any issue with the keyboard.

1. Press the FN+ESC keys together to activate the FN function on the keyboard.
2. Once the FN function is enabled, you can press the F1-F12 keys to access their respective functions.
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1. Ensure that the keyboard is fully charged, as a low battery can affect its performance.
2. If you are using the 2.4G USB receiver to connect the keyboard:
   • Unplug and replug the USB receiver into the USB port of your device.

If you are using Bluetooth to connect the keyboard:

• Delete the keyboard's Bluetooth connection from your computer's Bluetooth connection history.
• Restart your computer.
• Re-pair the keyboard with your computer by following the pairing instructions.
3. Try connecting the keyboard to other devices to determine if the issue persists.

1. The keyboard is fully compatible with the Mac OS system when it connects to your device via Bluetooth, but it's not fully compatible with the Mac OS system when it connects to your device with the USB dongle.
2. Please try to connect the keyboard to your device via Bluetooth to check if the problem persists or not.

No, the backlight cannot be kept on continuously. This design is implemented to preserve the keyboard's battery life.

Regarding the keyboard backlight:

• The backlight will automatically turn off after 1 minute of inactivity. Pressing any key will wake it up again.
• If there is no keyboard or backlight activity for 30 minutes, the keyboard will enter deep sleep mode. Pressing any key will wake it up, but the backlight will need to be turned on again.

1. Make sure to fully charge the keyboard using the provided charging cable. Connect the cable to the keyboard and a power source. The red charging indicator light will turn green once the keyboard is fully charged.
2. Wait for the charging process to complete and check if the keyboard turns on successfully.

The wrist rest is made of bionic leather, which is an environmentally friendly material. It features a layer of elastic sponge filling on the inside, providing comfort and support for the wrists while typing.