Sorry @rhimbo, I did laugh when you said you got the switch in 2018; safe to assume that returning it is not an option. I don't think a managed switch would have ever worked out of the box, so I...

Hi @MG67RF, A device that "supports" PoE is able to get it's power via the network cable itself. The C520ws has a seperate barrel connector that must be connected to a power supply. Generally, you...

Hi @rhimbo, I actually had to see for myself that this model is being sold as new because it looks like it's End Of Life. You may want to consider returning it. That said, are you able to ping the...

Hi @Sriracha02, Airplay uses several ports (TCP too) plus the ephemeral range. Based on your problem, you might be missing them; UDP/TCP ports 49152-65535 are used for the media transfer and screen...

Hi @SalSid, what you need is a backup from the dead controller and it doesn't sound like you have one. I'm not aware of a way to recover settings from the individual devices so you'll need to...

Hi @maresu, See How to use iPerf to test the speed between the EAP and the wireless client to help narrow down where the issue is.