Unlike older MacBook Pro’s which had a removable SSD drive. From 2016 onwards the SSD logic was integrated into the logic board physically.
A SSD is made up with two major elements the controller and the storage (Flash chips). Apple split the controller aspect into the T1 chip and then into the T2 chip which allowed the data content to be in real time encrypted! The storage stayed the same using Flash chips, but you can’t transfer the chips as the data is encrypted! Apple then integrated the T2 function within the M series SoC chip.
So the bottomline here is the act of replacing the logic board won’t allow you to recover the physical aspect of the storage. That is why it’s so important to backup your data to an external drive or on the internet Cloud storage of some sort be it Apple or other vendor.
OK, I said physically transfer, I didn’t say you still couldn’t access the data from your logic board, but that would mean trying to hobble it together long enough to back it up. A good shop should be able to do this unless the logic board is really badly damaged.
So the last issue is when you replace the logic board the power button that’s is mated to it needs to be transfers as well as the TouchID within the button is the key for access to your system. Without the one that’s married to the given board you have nothing! So be careful! Some sellers only ship the logic board as it’s deemed as a parts board to salvage some of the components. Others, sometimes mess up shipping just a grabbed out of the barrel button which is not keyed to the logic board.
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