» The 8GB model ships with one 8GB SODIMM, so it won't be operating in dual channel. I upgraded to 16GB with some Kingston Fury 2666MHz, the system supposedly supports up to 2933MHz memory but that's probably overkill for a device like this.

https://forum.xda-developers.com/t/beelink-u59-review-an-excellent-budget-mini-pc.4360359/post-85929389