The ports of the Ubiquiti UniFi Switch 24 Poe (USW-24-POE) are equipped with PoE+ (Power over Ethernet Plus). Of the 24 RJ-45 ports, 16 are configured as PoE+ ports, which can deliver up to 32 watts per port and 95 watts in total.

You're absolutely right. Thank you for pointing this out. We will be happy to pass this on internally to the relevant department and hope that it will be removed as soon as possible.

QoS is realised via the cloud controller

Yes, you can configure vlans. You need to install the software controller (Ubiquiti Network Application)

As far as I understand it, the switches are at least silent. We have several in use and have never noticed any. Unifi explains the new cooling method well on their website. I would take an additional look there.

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Now this question is quite funny :D have a look at the Cloud key it creates a complete network map (unfortunately only of unifi products) so you can't mix the switches but in itself it shows you all the info what is connected on which port. But only via a cloud key or local unifi controller server.

Hoi, nein. Du brauchst https://www.digitec.ch/de/search?q=INS-3AF-I-G falls "alte" devices hast.

Belongs to the generation with the O-LED screen, if that's what you mean. Have fun with it!