FAQ - KM90-A

Keyboard:

• Turn off the keyboard.
• Press and hold ESC + 3, then turn on the keyboard while holding.
• Channel indicator flashes quickly, then stays solid.
• Release buttons.
• Select channel and pair with your device.
• If name not found → toggle Bluetooth on/off and retry.

Mouse:

• Turn off mouse.
• Press and hold scroll wheel button, turn on mouse.
• Channel indicator starts flashing.
• Release after ~3 seconds.
• Select channel and pair.
• If name not found → toggle Bluetooth and retry.

Notes:

• If keyboard fails to connect, restart Bluetooth or delete duplicate device names.
• Use channel button to switch paired devices.
• Keyboard remembers last channel after power cycle.
• macOS only — not compatible with Linux, Windows, or Windows on Mac.
• Devices before 2013 or macOS < 10.12 are not supported.

• Unsupported: Devices before 2013 or macOS below 10.12.
• Ensure keyboard is fully charged.
• Check whether the channel indicator flashes correctly.
• Delete Bluetooth record & restart device.
• Re-pair keyboard following instructions.
• Try another device to check if issue persists.
• If still unresolved → reset keyboard Bluetooth.

• Charge keyboard fully; low battery affects performance.
• Delete keyboard from Bluetooth list, restart computer.
• Re-pair keyboard:
• Enter pairing mode → search → select KM90-A Keyboard.
• Test another device to isolate the issue.

• Unsupported: Macs before 2013 or macOS below 10.12.
• Ensure mouse is fully charged.
• Confirm correct mode based on channel indicator.
• Glass/smooth surfaces may cause lag → use mouse pad.
• Delete mouse’s Bluetooth record & restart device.
• Re-pair the mouse.
• Test with another device to determine root cause.

• Restart computer and reconnect mouse.
• Clean scroll wheel with alcohol cloth; blow debris with cool air.
• Ensure mouse is fully charged.
• Try another device to isolate issue.

• Low battery indicator flashes red until shutdown.
• Charge via Type-C → USB-A (indicator stays red while charging).
• Full charge: approx. 3-4 hours → indicator turns green.
• Low battery may cause lag — charge promptly.

• Inactive for 60 minutes → automatic sleep mode.
• Press any key to wake within 3 seconds.

• Press Fn + Shift to adjust brightness:
• 1st press → 30%
• 2nd press → 60%
• 3rd press → 100%
• 4th press → OFF

Notes:

• No operation for 2 minutes → backlight turns off automatically.
• No operation for 60 minutes → enters sleep mode, backlight stays off.
• After waking from sleep → backlight must be manually reactivated.

• Key icons = default multimedia functions.
• F1-F12 require Fn + F-key.

• Disable screenshot key (Cmd + 3): macOS → Settings → Keyboard → Keyboard Shortcuts → Screenshots → uncheck Command + 3.
• Enable/Disable numeric keypad: Press the Clear key.