Have two 2 1/2" drives Brand new. One has a U.2 connector the other has an M.2 connector. Bought these thinking I could run them in Raid 0 using VROC but unfortunately the motherboard does not allow this (Asus WS C422 PRO/SE). I hooked these to the mobo, tried to set-up Raid Volume and removed after talking with Asus TS. Nothing written to them at all. The U.2 version is model # SSDPE21D480GAX1 - Asking $480 or BO shipped The M.2 version is Model # SSDPE21D480GAM3 - Asking $500 or BO shipped (I have NO IDEA why it is more $) Will include modified WD Ice-Pack 3 1/2" heat sinks if you want them at no extra charge. Can provide copies of invoices if wanted!