As soon as the M1 Mac mini arrived, I tore it down to confirm a few things Apple didn’t make clear. All M1 Macs come with Thunderbolt 4 ports. I prepared my Mac mini test station with three monitors: Samsung 34-in Thunderbolt 3 ultrawide QHD, LG 27-in DisplayPort UHD, and ASUS 15-in portable USB-C FHD. This setup has been working great through RX Vega 56 Nano Gaming Box with my 2018 i5 Mac mini. The Apple integrated graphics card cannot run more than two displays at once.