HP fanless micro server. Esxi, Linux, Windows, Proxmox + PSU(Homelab) 12Watt

Versatile Virtualization: Supports multiple platforms such asPROXMOX ,ESXi ,Hyper-V, andWindows Server. Small & Compact: An x86-based server with the power efficiency similar to a Raspberry Pi. W (8.45-9.62W).

eBay