Chosen Solution
I bought a working 2.6Ghz motherboard to drop into my mid-2012 non retina MBP from ebay, everything looked fine then and everything else reconnects internally, but the battery connector for some reason is a straight inward connector and not the vertical drop in one. I can’t find a single image of a battery using this connector online, just the typical L shaped plugs. Has anyone ever seen one of these?
They shipped you an older 15” MacBook Pro Unibody (Mid 2009-Mid 2010) logic board! MacBook Pro 15" Unibody Mid 2010 Battery Replacement
You got a Intel Core 2 Duo board instead if the newer i-Series i5 or i7 CPU’ed board your system came with. I would return it and get your money back ASAP!
