After WEEKS of back and forth with Dell tech support on a simple failed SSD (after eight months) and with a 4 year warranty, DELL says this Optiplex does NOT have an SSD drive and send me a replacement HDD - well it ONLY has an SSD drive, and it failed and DELL will NOT replace it, saying I must have put in the SSD later...which I didn't.  What a scam!!  DELL will NOT support these units so beware...