LAN port settings Port Type Trunk Custom not available in high end routers

[TK_Liew]

This is the expected behavior. Please find the FAQ below.

VLAN Trunk on Balance and MAX

Untagged LAN is not available in VLAN Trunk mode in the following models: Balance 20 Balance 30/30 LTE Balance 50/50 LTE MAX BR1 HW1 MAX BR1 Pro HW1 MAX BR1 IP55 HW1 MAX BR2 IP55 HW1 MAX BR2 HW1 Surf SOHO HW1 Custom VLAN is not available in VLAN Trunk mode in the Balance 305, 380 or above, MediaFast 500/750