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How to Fix Common Ace 68 Keyboard Issues

MCHOSE
Updated

This troubleshooting guide covers the most common issues you may encounter while using the MCHOSE Ace 68 magnetic keyboard.

Note: Before troubleshooting, make sure your keyboard firmware and M HUB software are updated to the latest version.

1. Some Keys Are Not Responding or Do Not Register Correctly

If one or more keys do not respond, respond intermittently, or fail to register correctly, try the following solutions.

Possible Causes

  • Incorrect trigger calibration
  • Outdated firmware
  • Improper switch installation
  • USB connection problem
  • Incorrect trigger settings

Solutions

  1. Press Fn + Esc for 5 seconds to restore factory settings and test again.
  2. Open M HUB → Other Settings, check for firmware updates, and install the latest firmware.
  3. Remove the affected switch using the included switch puller and inspect it for damage or debris. Check whether the switch moves normally. Replace it with one of the spare switches if necessary.
  4. Open M HUB → Trigger Settings and perform manual key calibration.
  5. Connect the keyboard directly to your computer. Avoid USB hubs or docking stations.
  6. Try another USB cable or another USB port.
Tip: Manual calibration is recommended after replacing switches or if a key behaves abnormally.

2. Double Typing, Repeated Keystrokes, or Unexpected Key Activation

If a key triggers twice, repeats continuously, or activates without being intentionally pressed, it is usually caused by extremely sensitive trigger settings or environmental interference.

Possible Causes

  • Rapid Trigger settings are too sensitive
  • Firmware is outdated
  • Nearby magnetic interference
  • Switch issue
  • Keyboard placed on top of another keyboard or laptop keyboard

Solutions

  1. Update the keyboard firmware to the latest version.
  2. Open M HUB → Trigger Settings and perform key calibration.
  3. Go to M HUB → Performance Settings and enable Keystroke Optimization.
  4. Remove nearby magnetic or metal objects that may interfere with the Hall Effect sensors.
  5. Do not place the keyboard directly on top of a laptop keyboard during use.
  6. Replace the affected switch with one of the included spare switches and recalibrate it.
Important: Extremely low Rapid Trigger values may increase the chance of accidental activation. If necessary, increase the trigger distance slightly.

3. A Key Does Not Return Properly After Being Pressed

If a key remains pressed or does not spring back normally, inspect both the switch and stabilizer.

Solutions

  1. Remove the keycap.
  2. Remove the switch.
  3. Check for dust, debris, or any obstruction inside the switch socket.
  4. Install one of the included spare switches for testing.
  5. If the affected key is a larger key (such as Space, Enter, Shift, or Backspace), inspect the stabilizer.
  6. If the stabilizer feels dry, apply a small amount of keyboard stabilizer lubricant.
  7. If the issue remains, contact MCHOSE Support.

4. How to Calibrate Keys

The Ace 68 supports Adaptive Dynamic Calibration, which is enabled by default. During normal use, the keyboard continuously optimizes calibration automatically.

Note: Manual calibration is mainly recommended after replacing switches or when a key behaves abnormally.

Manual Calibration

  1. Open M HUB.
  2. Go to Trigger Settings.
  3. Select the key you want to calibrate.
  4. Begin calibration.
  5. Press the key vertically until it bottoms out.
  6. Repeat until calibration completes successfully.

Calibration Status Colors

ColorStatus
BlueCalibration completed successfully.
YellowThe key was detected, but calibration is incomplete. Continue pressing the key.
GrayThe key has not been detected yet.

5. Win and Alt Keys Are Swapped

If the Win and Alt keys appear to be reversed, the keyboard is likely in the wrong operating system mode.

Solutions

ShortcutFunction
Fn + OSwitch to Windows Mode
Fn + PSwitch to macOS Mode
Tip: Windows users should normally use Windows Mode. macOS users should switch to macOS Mode.

6. Some RGB LEDs Are Not Working

If one or more keys do not illuminate correctly, follow the steps below.

Solutions

  1. Press Fn + D to switch between lighting effects.
  2. Increase brightness by pressing Fn + A.
  3. Hold Fn + Esc for 5 seconds to restore factory lighting settings.
  4. Remove the keycap and switch to inspect the LED.
  5. If the LED still does not illuminate, the keyboard may require service.
Important: If the LED remains off after resetting and testing multiple lighting modes, please contact MCHOSE Support.

7. Keyboard Disconnects Randomly

If your keyboard disconnects during use, the issue is usually related to firmware, USB connection quality, or power stability.

Solutions

  1. Update the keyboard firmware to the latest version.
  2. Reconnect the USB cable securely.
  3. Try another USB cable.
  4. Try another USB port on your computer.
  5. Connect the keyboard directly to the motherboard USB port.
  6. Avoid external USB hubs or docking stations.
  7. If possible, test the keyboard on another computer.
Recommended: Rear USB ports on desktop computers generally provide the most stable connection for high polling rate keyboards.

8. M HUB Shows a White Screen, Infinite Loading, or Cannot Access Device Settings

If M HUB displays a white screen, continuously loads, or cannot access the device settings page, it is usually related to the USB connection, firmware communication, or browser permissions.

Solutions

  1. Make sure the keyboard is connected directly to your computer.
  2. Do not use an external USB hub, docking station, or adapter.
  3. Try another USB cable or another USB port.
  4. Force the keyboard into firmware update mode:
    1. Close M HUB.
    2. Press and hold Esc.
    3. While holding Esc, unplug and reconnect the USB cable.
    4. Release the key.
    5. Reopen M HUB and complete the firmware update if prompted.
  5. If the keyboard restarts while changing the polling rate or updating firmware, wait approximately 5 seconds for it to reconnect automatically.
Note: Temporary disconnection during firmware updates or polling rate changes is normal.

9. M HUB Cannot Detect the Keyboard

If your keyboard works normally but M HUB cannot recognize it, try the following troubleshooting steps.

Solutions

  1. Reconnect the keyboard directly to your computer.
  2. Try another USB cable.
  3. Try another USB port.
  4. Restart M HUB.
  5. If you are using the Web Driver, try Chrome or Microsoft Edge.

Enable HID Permission (Web Driver)

If the Web Driver cannot detect your keyboard, make sure your browser allows HID device access.

  1. Open your browser settings.
  2. Go to Privacy & Security.
  3. Open Site Settings or Permissions.
  4. Find HID Devices.
  5. Enable HID device permission.
Recommended Browsers: Google Chrome or Microsoft Edge.

10. Firmware Update Failed

If the firmware update does not complete successfully, try the following methods.

If You Are Using M HUB Web Driver

  1. Refresh the page.
  2. Reconnect the keyboard.
  3. Try updating again.
  4. If necessary, try another supported browser.

If You Are Using M HUB Desktop Driver

  1. Close M HUB completely.
  2. Make sure it is no longer running in the background.
  3. Reconnect the keyboard.
  4. Launch M HUB again.
  5. Retry the firmware update.
Note: Firmware updates may occasionally fail due to temporary server load or network conditions. If multiple attempts fail, please try again later.

11. A Key Continues to Trigger After Being Released

If a key continues to trigger after your finger has been released, or if key release feels delayed, the trigger parameters may be too sensitive.

Possible Causes

  • Trigger settings are too aggressive.
  • Calibration is inaccurate.
  • Firmware version is outdated.
  • USB connection is unstable.

Solutions

  1. Perform manual key calibration.
  2. During calibration, press the key vertically until it bottoms out.
  3. Increase the trigger distance or release distance if both are set extremely low.
  4. Enable Stability Mode.
  5. Increase the RT Smart value if necessary.
  6. Update the keyboard firmware.
  7. Try another USB cable or USB port.

Reinstall Firmware

  1. Press and hold Esc + Left Ctrl.
  2. Reconnect the USB cable while continuing to hold both keys.
  3. Wait until the keyboard enters firmware update mode.
  4. Open M HUB.
  5. Follow the firmware update prompt.
Important: Do not disconnect the keyboard during firmware installation.

12. How to Configure SOCD

SOCD (Simultaneous Opposing Cardinal Directions) allows two keys to follow different priority rules when pressed simultaneously.

Available Modes

ModeDescription
Last Input WinsThe most recently pressed key takes priority.
Key 1 PriorityKey 1 always has priority.
Key 2 PriorityKey 2 always has priority.
Cancel BothBoth keys are neutralized when pressed together.

Setup Steps

  1. Open M HUB.
  2. Go to Advanced Keys → SOCD.
  3. Select two keys.
  4. Choose the preferred priority mode.
  5. Click Apply.
Tip: SOCD is commonly used in competitive FPS games for movement optimization.

13. How to Configure DKS

DKS (Dynamic Keystroke) allows a single key to trigger multiple actions based on different press depths.

Setup Steps

  1. Open M HUB.
  2. Go to Advanced Keys → DKS.
  3. Select the key you want to configure.
  4. Add one to four actions.
  5. Assign a trigger depth for each action.
  6. Click Apply.
Example: 

When Should I Contact MCHOSE Support?

Please contact our support team if:

  • The keyboard is not detected after completing all troubleshooting steps.
  • Firmware cannot be updated after multiple attempts.
  • Keys remain unresponsive after replacing switches and recalibrating.
  • RGB LEDs remain off after resetting the keyboard.
  • The keyboard disconnects on multiple computers.

To help us diagnose the issue more efficiently, please include:

  • Keyboard model
  • Firmware version
  • M HUB version
  • Operating system
  • Order number (if available)
  • Photos or videos demonstrating the issue

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