Often times Apple alters things enough between the series runs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir4,1|Mid 2011 - MacBookAir4,1] Vs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir5,1|Mid 2012 - MacBookAir5,1] parts are not compatible.
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Often times Apple alters things enough between the series runs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir4,1|Mid 2011 - MacBookAir4,1] Vs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir5,1|Mid 2012 - MacBookAir5,1] so the parts are not compatible.
This is one of the rare times they didn’t. The logic board is functionally a direct drop in, But you will have an issue with the display not working properly, but it will work! The displays ID is the issue.
I would stick with your current SSD unless its running out of space. If that’s the case I would strongly recommend sticking with the real Apple SSD’s or either OWC or Transcend SSD’s as they are designed to be compatible.
I don’t recommend using M.2 SSD’s with the cheap adapters being sold.
Often times Apple alters things enough between the series runs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir4,1|Mid 2011 - MacBookAir4,1] Vs [https://everymac.com/ultimate-mac-lookup/?search_keywords=MacBookAir5,1|Mid 2012 - MacBookAir5,1] parts are not compatible.
This is one of the rare times they didn’t. The logic board is functionally a direct drop in, But you will have an issue with the display not working properly, but it will work! The displays ID is the issue.
I would stick with your current SSD unless its running out of space. If that’s the case I would strongly recommend sticking with the real Apple SSD’s or either OWC or Transcend SSD’s as they are designed to be compatible.
I don’t recommend using M.2 SSD’s with the cheap adapters being sold.