At idle I'm seeing a power requirement of about 29.7W with my current configuration: HPE ProLiant MicroServer Gen10 BETA  32GB RAM (2 x KVR24E17D8/16) Windows 10 Pro x64 with HyperV enabled OS Drive: SATA Port 5 – Samsung 840 Pro 256GB located in ODD bay Data Drive: SATA Port 6 – WL500GLSA8100 500GB 10K RPM 2.5” HDD mounted on revised SDM 3.5 that I mounted on side of PSU Data Drive: SATA Ports 1&2 in SW RAID0 2 x WD3000HLHX in drive bays 1&2