

different to the standard M2 the standard Samsung drive will not fit in an Apple slot. The Samsung 950 Pro is a standard PCIe type of SSD and is of a connector type generically called an M2 and a type of card called a NGFF (Next Generation Form Factor) but as Apple use a slightly different proprietary connector i.e. Note: It sounds like the PCIe carrier you are saying you have ordered is a full-size one and as such it would only fit and work in a classic Mac Pro.

Various models have had mini PCIe slots intended for use with WiFi cards which they came with as standard, and the latest Mac mini 2014 model has a special non-standard PCIe slot solely intended for Apple's own SSD.

The Mac mini (any version) has never had a standard PCIe slot.
