I unboxed it to find that the thumb-screw that secures the case had been likely tightened with a power tool.  I could not get the fastener open , and it had been tighted so much that the back of the chassis was deformed.  The case was assembled with  the video port misaligned, so when the case was tightened, the port was bent up off the board inside.Returned for refund.  Buyer Beware.