SeasonicSSP-300TBS 300W 80 PLUS Bronze TFX 12 V v.2.31 Power Supply w/ Active PFC F0

It came in a Newegg box. It is a raw power supply wrapped in bubble wrap. No screws. No power cord. Will complete the build tonight or tomorrow. If the unit works, I'll bump up the rating.01/19/19 update: it works and runs very quietly. Just enough connectors for mATX board and 3 SATA devices.