port speed

Delta001

the WAN port 1 of a USG60 connect on 100Mbs and not on 1Gbs anymore.

can I change that?

PeterUK

It should connect at 1Gb by its self so their likely is a reason for it not...do you have a modem to the WAN port? If so test with a PC you can link at 1Gb.

It could also be a damaged cable so try a new cable.

Zyxel_Charlie

Delta001,
Per Peter suggested, you can use this method to cross check the Hardware capacity firstly.

BTW, I’m curious about you mentioned “not on 1Gbs anymore.” Did you mean that your device had ever connected at 1GB before or? Can you recall what had been changed afterward?

Charlie