GS108E Guest Network VLAN

Here again, like on all common consumer Netgear routers: What is advertised as a guest network in the marketing blush, becomes a little bit more clear when  looking e.g. into the Nighthawk AX6 AX2700 WiFI Cable Modem Router User Manual does designate it like

"Set up a guest WiFi network
A guest network allows visitors to use the Internet without using your WiFi security
password or with a different WiFi password. By default, the guest WiFi network is
disabled. You can enable and configure the guest WiFi network for each WiFi band."

The point is "guest WiFi network" - to my knowledge, all these devices don't have a real wired isolated guest network, neither on a dedicated port, nor on a VLAN.

So there is nothing these web configured or smart or managed switches can do in this context, at least not without adding e.g. an additional router.

-Kurt