I bought one of the Natex, S2600CP w/ dual E5-2670. I am getting a 1-5-4-4 beep code "This beep sequence indicates a power fault or failure". Everything will power up and boot into UnRaid from a USB stick, UNTIL I plug power into even one hard drive. With a hard drive attached the fans spin for a second or two and then I get the beep code. I have removed one of the CPU's, both CPU power cords are attached. My case is a Rosewill RSV-L4411, with a Seasonic FOCUS Plus Series SSR-750FX PSU.