I spent a lot of time looking at these, the Zotacs which have N3150+ CPUs with AES-NI and dual SO-DIMM slots allowing dual-channel operation but Realtek PHYs and buggy BIOSen that never get updated before going NLS. The Qotom and similar via Amazon and AliExpress etc. with the inevitable J1900 and 4 i211 NICs but quality control problems, long shipping times and single DIMM slots, etc.
In the end I just a picked up a new, cheap because it's now rather dated, Intel DQ77KB ThinITX server board, in part because I had a leftover 65W Sandy Bridge i5-2500S and 8GB worth of compatible SODIMMs, all left over from upgrading my 2011 iMac. And a compatible 90w DC PS reclaimed from a long-obsolete HP laptop. Run it caseless on a baseplate hacked out of an old box, stuck a quad-NIC board in the PCIe slot anchored with a handmade bracket and now I have a general purpose 6 Intel NIC networking appliance that's just crazy overpowered for any networking VPN multiwan teleworking scenario I can throw at it -- and damn if it doesn't get intricate given some of my clients -- and still only pulls 25 watts typical. Yes, that's more than 3w but still only half of what I save on any given LED lightbulb over the incandescent it replaced...