Internet suddenly stops working on Mac Mini M2 pro

Same issues here. Have tried all the suggestions. Some things seem to work for a while but then the signal drops off. Tested with iPad, iMac and iPhone in the same location and all are fine. Have unhooked USBs - covered in tinfoil, stood on it's side - everything but can't get a stable connection!! I need my connection for work. I can't believe in 2024 I've just ordered a 15m ethernet cable just so I can access internet!! I see the same issues everywhere on the internet. Come on Apple there must be a solution for this!!

All other Apple devices work seamlessly. The router and ISP seem fine as all other device get and maintain a good signal in the same area. If I run a speed test it can vary between less than 1mb when slow to 15mb when ok (this would be what all other devices are reading at all times in that room). This variation occurs when nothing else changes in the setup - no other Wifi devices or peripherals being added to the network or Mac Mini. If I run a ethernet cable directly its perfectly fine. I don't understand why all other Apple products are stable and the Mini's connection is so erratic?

I am using an M2 Mac Mini Pro with Sonoma 14.4. I have two separate Wi-Fi SSID associated with different subnets — one for Wi-FI 802.11n devices, and the primary configured for 802.11n/ac/ax. The router is a Synology RT6600ax with current firmware. The primary SSID connects and stays connected from the time I power up the mini until I shut it down. No Wi-Fi loss at all as long as there is no power outage or ISP delivery issues.

I also happen to have a Netgear Nighthawk M6 Pro WiFi 6E hotspot router on a carrier data plan which provides a separate 6E SSID (and another subnet) to the mini when used and I choose that SSID. When I shut it off, Wi-Fi automatically falls back to the primary 802.11ax SSID that I ordinarily use all day.

There is nothing for Apple to resolve in my setup, and although there are several posts (and my own experience) about intermittent Wi-Fi connectivity rate fluctuations to a router, I have not read any posts where the Wi-Fi connection chronically drops entirely. That sounds more like a router or ISP configuration issue.

Hopefully this helps someone else....

I used a UGreen Usb extension to move the USB hub away from the Mac Mini and have managed to keep the Wifi signal stable. Even a different angle of Mac Mini placement on my desk can dramatically effect signal strength. Seems it's a little more sensitive than my iMac was....