Chosen Solution
Does anyone know the difference in end letter of the SSD with part numbers 655-1837C vs 655-1837D or 655-1816B vs 655-1816A.
We are talking about the Apple SSD’s right? The 655-1837 part number is an Apple proprietary 128 GB PCIe 2.0 x2 interface for the Mid 2013 - Early 2014 11" & 13" MacBook Air’s Give this a read I think you’ll find it helpful: The Ultimate Guide to Apple’s Proprietary SSDs
