Using monitor built-in webcam with MacBook Air

The BE279QSK webcam connects via USB, not HDMI or DisplayPort. That’s key. Just having the monitor connected for display via Thunderbolt/HDMI/DisplayPort won't activate the webcam—it needs a dedicated USB upstream connection.

Try this:

• Find the correct USB cable: Use a USB-A to USB-B (printer-style) cable, typically included with the monitor. The square-ish USB-B end goes into the monitor (look for a USB port labeled upstream).
• Plug the USB-A end into your hub: The hub must be connected to your MacBook Air’s Thunderbolt 4 port.
• Now open FaceTime, Photo Booth, or Zoom, then go to settings and choose the webcam from the list (it’ll likely show up as a "USB Camera" or "BE279QSK").
• In System Settings > Privacy & Security > Camera, ensure the app you're using has permission.

If the webcam still doesn’t show up, try plugging it directly into a USB-A port on your hub or try a different USB port, just in case the upstream port isn't active or your hub doesn't handle that traffic properly.

sjstoronto wrote:

Do you happen to know if I can get a hub with both USB-A port and thunderbolt port? I'll do some searching online.

I suggest checking out what OWC offers along this line.

You're very welcome!