I just purchased an Anker PowerExpand 6-in-1 USB-C Ethernet Hub. When I first attached it to my MacBook, the HDMI connection worked. Since then it has quit working. All other parts of the hub work. I’m using a 16-inch MacBook Pro running Big Sur 11.4. I’ve plugged power directly into the hub and cycled the computers power and the HDMI still doesn’t work.
I remember that problem has been discussed here.
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Thanks Chiquinho, I tried that and came up dry. I’m wondering if it’s a compatibility issue with Mac OS BigSur.
Could be, I dont know.
May be you will get answers from other Mac users with the same OS.
Otherwise you could always contact the support.