I'm building a completely new PC and the mobo doesn't see the M2 drive in either of its on-board slots The mobo is an Asus ROG Strix H370-I Gaming and it's up and running with an i5-8600T and 2 x 8GB of Corsair Vengeance 2400 LDX. The M2 is a Samsung PM981 256GB which I believe is the OEM version of the 960 Evo. (I'm sure I ordered a 960 Evo but that's not what's on the order.) I've tried the M2 in both top and bottom slots of the mobo but it just isn't seen as being there at all. The M2 gets warm when the mobo is running so it's obviously drawing power. Unfortunately I don't have another M2 to test the mobo or suitable mobo to test the M2 as this is my first-up-to-date build for a few years. Oh, I have updated the mobo BIOS. So is there something I don't know about M2 SSDs that I need to do to get it recognised or have I got a duff one?