> For the complete documentation index, see [llms.txt](https://8bitmods.gitbook.io/manuals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://8bitmods.gitbook.io/manuals/bitlink-dc-adapter/reference/troubleshooting.md).

# Troubleshooting

| Symptom                                    | What to check                                                                                                 |
| ------------------------------------------ | ------------------------------------------------------------------------------------------------------------- |
| The adapter does not switch on             | Charge it. See [Charging and battery](/manuals/bitlink-dc-adapter/getting-started/charging.md).               |
| The LEDs keep swooshing green              | The dongle is in 2.4G mode and its LED is green. Pair them again: press the button on each.                   |
| The controller does not respond in a game  | The adapter's cable is plugged in fully at both ends.                                                         |
| There is no rumble                         | Vibration is turned on in the game's options. Air mouse is off. The adapter is not in Bluetooth gamepad mode. |
| The VMU is not used                        | It is in the front slot, not the rear one. Wait for **SYNC** to finish.                                       |
| A mouse game does not respond to Air mouse | Plug the dongle into port A.                                                                                  |
| The adapter does not switch off            | It is on USB power. Unplug the cable first.                                                                   |
| A computer cannot find the gamepad         | The LEDs are blue. Press the power button once to forget old pairings, then pair again.                       |
| The WebUI cannot find the adapter          | Press the power button three times. Use Chrome or Edge.                                                       |


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