@Jerry1098 I have XG105 rev. 3 and using it as ESXi host for networking tests. The CPU doesn't have power management features that you'd find on a regular PC, so it's only useful as a network device. Consider that Sophos has a free firewall and VPN, even if your license has expired. That model was designed as a VPN device for SOHO and homeworkers, so it seems like it would be fine for other VPN installations.
@Jerry1098 I have XG105 rev. 3 and using it as ESXi host for networking tests. The CPU doesn't have power management features that you'd find on a regular PC, so it's only useful as a network device. Consider that Sophos has a free firewall and VPN, even if your license has expired. That model was designed as a VPN device for SOHO and homeworkers, so it seems like it would be fine for other VPN installations.