Product, price, shipping were wonderful (really satisfied with the unit).However, when starting to move files from backup, found that front USB drives did not work.  Went down rabbit hole of thinking drivers not updates, spent some time with Amazon support (which was fine, but did not resolve issue).  Went ahead and opened the box, found USB drive wires, traced to board and found that connector was not seated into the board (connector was in socket, just not seated) and, once I seated the connector, USB drives worked fine.Thought box was to have internal DVD drive, but did not.  An external drive was enclosed, but no connecting wire.  Amazon support offered a credit (which is fine, thanks, no problem) so that I could apply to wire or external drive.Point is that QC of product did not catch the USB issue prior to shipping, but I'm thankful that I was able to easily resolve this without sending back or spending time on phone or email chat, or going to third party repair for something that turned out as easy fix.