The NanoPi NEO3 Plus is a compact, headless single-board computer:
- Rockchip RK3528A SoC with 1GB of RAM
- Gigabit Ethernet, a USB 3.0 port, and a 26-pin GPIO header
- 2.0 GHz quad-core Cortex-A53 processor
- Debian, Ubuntu, OpenMediaVault, Proxmox, and FriendlyWrt, openclaw
- $24, plus $8 case and 64GB or 256GB eMMC module for $23 or $61
Documentation and downloads for Proxmox Mail Gateway, including admin guides for versions 9.x, 8.x, and 7.x, as well as a datasheet.