How Apple Silicon on a M1 Mac changes monitor support and what you can connect | AppleInsider
Setup Dual Monitors to an Apple M1 or M2 MacBooks | Kensington
MacBook Pro Docking Station, 14-in-2 Dual USB C Docking Station Dual Monitor for MacBook Pro (Not M1) MacBook Air Dock with Dual 4K HDMI 60Hz, 10Gbps USB, RJ45, Audio, SD/TF Slots, 87W
Hyper unveils new 'Dual 4K HDMI' dongles for using multiple external displays with M1 Macs - 9to5Mac