I mentioned the AV Access iDock-M10 because it solves a very real two-computer desk problem with one box and one button. The standout for me is true dual extended monitors on supported Macs without DisplayLink, drivers, or background software, plus stable switching that keeps windows and resolutions from going crazy. Add 100W power delivery, 1Gbps Ethernet sharing, and plenty of USB, and it replaces multiple accessories at once.
Pros
+True dual extended displays on supported macOS without DisplayLink/drivers
+Stable switching with EDID emulation (no lost windows or resolution resets in my use)
+Up to 4K 60Hz via dual HDMI outputs
+100W power delivery stayed close to rated output under load
+Shared 1Gbps Ethernet keeps both machines online during switching
+Plenty of ports (10Gbps USB for SSDs, SD card, audio)
Cons
-Dual extended display support depends on your Mac chip; unsupported Macs may show a black screen
-Around $300, so it’s not a budget accessory
-Some MacBooks (like certain M3 models) may require lid-closed for dual external monitors