Questions about Ubiquiti UniFi Flex XG

Quick question I read that the input port only has 1G, so what good are the 4 10G ports if I can only get 1G in - that would be a bottleneck and completely unusable, right?

Hello QUESTION: Do these Ubiquiti UniFi Flex XG, pass on VLANS from Cisco, or can I use them as a backbone for Cisco SG300 switches? BACKGROUND: I have 3 Cisco SG300 distributed over 3 floors. Now I want to increase the bandwidth for two devices, by reconnecting the floors with these Ubiquiti switches and then connecting the Cisco SG300s to them. This way I would have a 10Gbit connection on each floor. Since I use VLAN on the SG300, these would have to be passed through the Ubiquiti UniFi Flex XG. Thanks

Can the POE port also be used to operate an AP, for example? Or is it only an input to operate the switch itself?

Do you know what is the real world power consumption of that model especially when idle?

Hello all, I have a Dream Machine Pro SE and would like to connect this switch to it. The PS5, a PC and AP U6 Pro will then be connected to it. My question now: Can I also give the uplink e.g. to one of the four 10Gbit ports and leave the POE empty? I want maximum speed and have read that the POE port only has 1Gbit.

Does this switch also work without USG or UDM?