I bought one of these. Unfortunately due to supply-chain holdup the order is pending indefinitely. The primary use-case is as a core router for high-throughput networks like ISP backbones, hence the focus on built-in SFP+ which would usually need an array of PCIe cards to accomplish on a standard box. But you can also use it as a NAS which is how I intend to because of the 4x SATA. Both of these use cases require only moderate CPU power and benefit from the ECC support.