user confirmed dell shipped usb hub works fine
I have 2 different multipurpose USB C hubs. These contain USB A ports, HDMI & Ethernet & PD When connecting one or the other, HDMI works, but the USB A port is not functioning. I cannot connect a keyboard to it. Even more, new devices via Bluetooth like a Bluetooth mouse won't connect while the USB c hub is attached to the notebook.  The USB c hubs works with any other notebook. So these are not broken. All updates/firmware updates were executed. Also tried a fresh windows 11 install to be sure nothing else was breaking the connection. USB C hubs not working: [URL] The small USB C hub with only hdmi & 1 usbA delivered with the XPS does work. Making me think it's some older protocol maybe that is buggy with the new XPS 9520
Third party USB C hubs malfunction with XPS 9520