Two Monitors but Different Resolution Options

[JohnAtl]

Finding supported resolutions seems impossible.
But anyway, here is someone running 3840x2160 on two displays, one an HDMI and one USB-C–>HDMI from an M1 Mac Mini. So it’s doable.

2 Monitors on MacMini M1

Thanks to tonycapp, my Mac mini M1 (2020: 16GB, 1TB, macOS Big Sur 11.3 Beta 2) now has a working dual HDMI display setup. The key is using the Belkin USB-C to HDMI Adapter (F2CU038dsWHTAPL) purchased from a local Apple Store. I do not know what other USB-C to HDMI adapters might work. Two 49-inch 4K Samsung TVs are connected, one (UN49MU6500) upstairs near the Mac mini, and a second one (UN49NU6300) downstairs with an Onkyo TX-SR393 AV receiver. The downstairs Samsung TV supports AirPlay Displ…