The USB-C or USB 3.0 to Quad HDMI Adapter (USBC-768H4) changes this. Now you can add four HDMI displays through a single USB-C or USB 3.0 port - all with a sharp image of 1920 x 1080 @ 60Hz, even on M1 and M2 Macs. This multi-monitor adapter still manages all the heavy lifts associated with transmitting your video signal over four monitors. Interesting, however, is how the adapter handles the task of parcelling the pixels on your screens. Many adapters rely on USB-C features that are not available on all systems. The USBC-768H4 uses a Silicon Motion chipset and software driver to accomplish the task. From the users point of view, there is no big difference. Unless you are randomly on an M1 or M2 Mac. These particular computers do not support more than 1 alt-mode display, so the default approach would not work. Driver download is required. On Windows computers, the update is automatic, but we recommend installing the driver manually. On a Mac, this is achieved via the InstantView app. And remember that while the DisplayLink driver with this adapter offers similar functions, it will not work. A USB to HDMI adapter for monitor expansion opens up new levels of productivity. Dedicate an entire screen spreadsheets, emails, stocks, or anything else you work on. The USBC-768H4 adapts to your multitasking style. Use it to expand to one, two or three screens. It works just as well if you dont open all four ports. It has no external power source or bulky cable to manage. What it has is a flat cable that plugs into the bottom of the device when not in use.