Computer arrived almost as advertised.  There was no optical drive present.  I didn't bother sending it back as I plan to install a Blu-Ray drive anyway.  Two pieces of RAM were Crucial brand, one Samsung, and one Hynix.  Ram tested OK with Memtest86.  CPU was as advertised and tested OK with Prime95.  SSD is Microfrom brand and according to the SMART data is brand new.  One of the tabs on the front bezel was snapped off but a little hot glue solved that problem.  Power supply is loud and can be heard in a quiet room, even when powered off.  The computer runs Ubuntu well and will boot from an M.2 SSD (via a PCIe adapter).  Power supply connectors are proprietary and requires an adapter to use with a regular ATX supply.