---
title: BlueSoleil Dongle is malfunctioning
description: The USB 3.0 port should be avoided when using BlueSoleil dongle. Although the dongle will perform the same as with USB 2.0, there's a risk it may stop working. You can use a USB 2.0 extension cable (o
---

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1. [Smarting](https://support.mbraintrain.com/smarting?hsLang=en)
2. [BlueSoleil troubleshooting](https://support.mbraintrain.com/smarting?hsLang=en#bluesoleil-troubleshooting)

# BlueSoleil Dongle is malfunctioning

The USB 3.0 port should be avoided when using BlueSoleil dongle. Although the dongle will perform the same as with USB 2.0, there's a risk it may stop working. You can use a USB 2.0 extension cable (or adapter) to reduce the risk of malfunctioning. We send such an adapter with the dongle so please make sure to use it always!

 

If the BlueSoleil dongle is not blinking and is not recognized as a USB device on your PC, contact us for your options: [support@mbraintrain.com](mailto:support@mbraintrain.com)

 

However, if the dongle light is active, make sure to look at our other BlueSoleil debugging articles before contacting us:

[BlueSoleil Not Compatible with Windows 11](https://support.mbraintrain.com/bluesoleil-not-compatible-with-windows-11?hsLang=en)

[I am having problems with BlueSoleil – The software keeps asking for a license](https://support.mbraintrain.com/i-am-having-problems-with-bluesoleil-the-software-keeps-asking-for-a-license?hsLang=en)

[When I try connecting Smarting in BlueSoleil software, it gives me an error "Pass-key doesn't match"](https://support.mbraintrain.com/when-i-try-connecting-smarting-in-bluesoleil-software-it-gives-me-an-error-pass-key-doesnt-match?hsLang=en)

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