I stuck in a Samsung Evo 960 into my MBP early 2015, and it works great, but often it fails to recognize startup disk, so I get the "flashing ?", so I turn it off and back on, and it boot fine. Is there a fix for this?
This is my opinion. Try this adpter.
Today a new adapter (large) of sintech arrived so I tried swapping it immediately. Surprisingly there is no problem at restart. I feel that contact has become good as the connector of the SSD has been replaced with a strong spring. The machining accuracy also improved and it fits in the same size as the genuine SSD.
adapter and 2 drivers $15.99
NGFF M.2 PCIe SSD Card as 2013 2014 2015 MacBook SSD
[URL]http://eshop.sintech.cn/ngff-m2-pcie-ssd-card-as-2013-2014-2015-macbook-ssd-p-1143.html
[/URL]adapter only $8.99
NGFF M.2 PCIe SSD Card as 2013 2014 2015 MacBook SSD
http://eshop.sintech.cn/ngff-m2-pcie-ssd-card-as-2013-2014-2015-macbook-ssd-p-1139.html