WARNING: It seems there are MULTIPLE DIFFERENT BATCHES of Beeelink Gemini M with different issues/compatibility. Some Beelink Gemini M have zero issue in old BIOS ver M41N105. It have working fan PWM adjustment and the RPM can be monitored. This is the best Gemini M. No CPU idle issue.
Some other unit cannot monitor the fan RPM and the PWM can't be adjusted (when set to 0, fan still spinning as usual). This is the two units I received, have CPU idle issue, but CPU idle fixed with BIOS ver M41N106.
Some people reported bricked after bios update. Please email beelinkservice ((at)) bee-link.com with your serial number photo attached to get a bios directly from them. Then please share the bios to me thru the comment box, last 5 digits of your serial, and tell me your Gemini M have working fan RPM & PWM or not. Maybe there are multiple hidden revisions.