For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
How could we know/assure that?
Nor even the chinese sellers know that.
They just resell anything...
I recently received "new" TDA8920BTH from China; got them with 20 pins, instead of 24 pins as normal.
These chinese don't have any idea about electronics.
They also get scammed I suppose, just because of missing knowledge...