But with the Sabrent HB-B7C3, you may just toggle power on whatever port your microcontroller is plugged into. There are two entire-sizing HDMI outputs joined by an old-school VGA output. The VGA can only handle outputting at 1080p, but 1 HDMI can output at resolutions approximately 4K at 60Hz though https://supertop-shop.com/usb-hub-with-3-ports-and-ethernet-connector/