I use an inexpensive USB dock with a single HDMI port for my M1 air, on a single 27 inch 4K monitor. It works with a single port and also provides gigabit netwo

I use an inexpensive USB dock with a single HDMI port for my M1 air, on a single 27 inch 4K monitor. It works with a single port and also provides gigabit network and power, and works at 60Hz. It’s one that supports DisplayPort 1.4 for the link between the laptop, so it can fit 4k60 over the available lanes, but then HDMI to the display. There are many like it, but this is mine: https://www.amazon.com/dp/B08SLS9W72 https://www.amazon.com/dp/B08SLS9W72 - the internal DP1.4 support is essential and relatively new. Some more here about that, https://dancharblog.wordpress.com/2021/01/03/4k60-monitor-plus-usb-devices-from-single-usb-c-laptop-port/amp/ https://dancharblog.wordpress.com/2021/01/03/4k60-monitor-pl... I’ve found that if I use it with a USB extension cable it works, but my wireless mouse stops working reliably - even on other computers. I think the extension cable throws off interference in the 2.4Ghz range. Apart from that, no issues.