How to swap the motherboard in a Lenovo B50-50

This is one of our laptops that is used for 1-2-1 tutorials. The USB port stopped working so I got a replacement board from eBay for £29.99 and here I swap them over.

Admission time... This is what happens when you don't use a powered USB hub with the CH341A.

Be-Quiet thermal grease https://www.enscomputers.co.uk/product/be-quiet-thermal-grease/

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