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Hi there,

Hi there,

how did you connect the both monitors?

I have a MacBook Pro (2016) with macOS Big Sur (11.5.2) and connected it via USB-C (PowerDelivery 90W) to the Dell U2722DE. I also connected different USB devices and the RJ45. Everything works fine here.

I also connected a Dell U2722D via its DisplayPort (rear view, right DP) via the DP input on the Dell U2722DE (does not matter if left or right port). Also installed Dell Display Manager.

Problem: The second monitor (U2722D) is not decteced by my Mac and also the USB ports are not connected.