@weikianng Hi, Deco M9 plus does support cat8. And M9 Plus is Gigabits Ethernet port, maybe Cat 8 is too much for it.

@PauloVen Hi, what is the internet IP/IPv4 address on the MR3020? I think the issue might the USB dongle did not provide a public IP for MR3020 and you might need to contact with the USB dongle...

@tgo Hi, I noticed that the Ethernet link speed on the computer is 100/100 but you could still get 103m/s from Deco, which is unexpected? And when the PC is wired to the modem, the link speed is...

@XxalmogxX Hi, I tend to think it is not related to the EU or US version. And actually, the firmware for Deco X60 V2 is the same for the EU and US versions.

@SirT Hi, would you mind trying the beta firmware here first； [Solution] Wi-Fi speed drops down after updating Deco M4 to the latest 1.5.0 firmware

@L_Blok Are you still able to log into the Deco APP via the reset password?