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Seen Steve's comment, USB already have a tighning system, 4 tabs per USB female connectors.

Pushing them inside will tighten the connection.

Sadly, only two of these tabs are accessible on the 4 USB ports RPis, as the inner one are hardly accesible, but this still should be enough to make things work better.

You may find some practical advices to tighen the USB ports on this link : https://aramblinggeek.com/quick-fix-fixing-a-loose-micro-usb-cable

Seen Steve's comment, USB already have a tighning system, 4 tabs per USB female connectors.

Pushing them inside will tighten the connection.

Sadly, only two of these tabs are accessible on the 4 USB ports RPis, as the inner one are hardly accesible, but this still should be enough to make things work better.

Seen Steve's comment, USB already have a tighning system, 4 tabs per USB female connectors.

Pushing them inside will tighten the connection.

Sadly, only two of these tabs are accessible on the 4 USB ports RPis, as the inner one are hardly accesible, but this still should be enough to make things work better.

You may find some practical advices to tighen the USB ports on this link : https://aramblinggeek.com/quick-fix-fixing-a-loose-micro-usb-cable

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source | link

Seen Steve's comment, USB already have a tighning system, 4 tabs per USB female connectors.

Pushing them inside will tighten the connection.

Sadly, only two of these tabs are accessible on the 4 USB ports RPis, as the inner one are hardly accesible, but this still should be enough to make things work better.