Server 2012 R2 w/ Hyper-V role, there are several 2012 R2 and Windows 10 VMs.
Noctua U12S mounted using narrow ILM kit, unfortunately it can only attach in that direction otherwise I would turn it.
All drives are in a Stablebit Drivepool with duplication. Plex for media streaming.
Mellanox ConnectX-2 for 10 gigabit link directly to gaming rig via SFP+ direct attach cable.
GT 1030 for video output to my new monitors as they don't have VGA (motherboard has onboard video, but only VGA out). Passive cooler to avoid adding small fans to this server.