GS728TPPv2 M4100-24PoE+ Port PVID question with two vlans

[Budgie4]

I have set up two vlans with different subnets with dhcp and dns enabled on my UTM.  These are both set on one port on the UTM.

When I connect this port to my switch I have to configure the switch port to receive this connection.

I have set up the port on the switch to connect as U-ntagged on the port and it is a member of both VLans but... I understand I can only set one PVID per port which defaults to 1 but this is usually the case for T-runked ports.

Am I right to use U on the connection to UTM or should it be T?

[schumaku]

You can configure the trunk port for the UTM<->Switch link on both sides as tagged for all VLANs, or you can keep _one_ VLAN untagged with the same PVID obviously.