@josepc What 802.1x client did you use? If you were using windows PC, you can try to download TP-Link 802.1x client software....

@davidcampos If you connect to xbox to your Arris SBG6580 surboard cable modem directly, can it work? (As I know, the router may need to enable UPNP) Or did your xbox ever work with other switches?...

@paltinis This is a easy-configured switch. Probably not many people must need this feature. But if TP-Link can add this feature, it's also not bad.

@DCi-Corp Maybe the issue related to your VPN client. You can refer to the following FAQ if you were using Windows PC. https://www.tp-link.com/en/support/faq/1029/

@qzadmin I have a beta firmware for ER604W. If you don't mind, you can have a try. But please note that (US) version need to upgrade to (US) version. (EU) version need to upgrade to (EU) version....

@AZeroEight For TP-Link switch, it seems that only has (UN) version. So you don't need to worry about loosing your warranty. For other products, maybe has (US), (EU), (UN) version, then need to...