The question is quite justified. Because Swisscom TV needs the highest priority (QoS protocol), and Swisscom recommended this switch for a long time. But not any more. Instead, the TP Link TL-SG2008. Possibly to do with UHD...?

The Swisscom TV boxes work perfectly with the switch and I didn't have to set anything (plug & play).

In my opinion, the switch works in every LAN network. I know of no restrictions.