When the unit arrived, the SSD IMMEDIATELY failed and was corrupted and bad.  The unit would not boot up at all.  See error message when I tried a BIOS Data Wipe just to see if it was a corrupted OS.  It was not. This reseller has HORRIBLE QA and techs.  To fix this problem I bought from Amazon a new ACER FA100 512GB M.2 SSD 2280 NVMe Gen3 x4 and I am a least MORE technically knowledgeable than their staff, (probably all H1B visa hacks), and was able to replace the failed SSD from SK Hynix with the ACER NVMe which has worked perfectly.  Do NOT buy from this vendor unless you are capable of FRU repair and replacement.  The Dell laptop itself is fine, but this vendor has NO idea how to refurbish a system.