Beelink SER9 MAX (H 255)

What owners say

Three reviewers had this exact chip, and they agree on the power figures more than on the noise. Idle sits under 10 W — 8.5 W at the wall under Proxmox — and a full processor load draws 75 to 77 W, with the chip staying under 82 °C and no throttling in the heaviest test. One reviewer found it very quiet throughout; another heard the single fan under heavy load and lists "not always very discreet" among its drawbacks. The headline is the 10GbE port, and it comes with a catch: the controller is Realtek, so VMware ESXi will not install, although the port also negotiates 2.5 GbE. Early owner reports on networking are mixed — one had no Ethernet link at all and another saw 90 Mbps over Cat6 on a new unit — and neither thread was resolved. There is no NPU and no VESA mount, and the Wi-Fi card sits under the SSDs with its antenna wires close by, so open it carefully. Beelink says it ships a clean Windows, but a reviewer and an owner both found trial software preinstalled. Beelink refused BIOS support to one buyer whose unit turned out to be the Chinese-market model.

For whom

A small Proxmox or container host that needs 10-gigabit networking in a mini PC and draws little power at idle.

Not for

VMware ESXi users, and owners of a recent mini PC without a 10G network — one reviewer calls the gain over the SER8 small.

Our own summary of 6 published sources, reviewed Sep 23, 2026. We have not tested this Mini PC ourselves; the sources are listed under About this data.