SonicProtect for TZ400 FAMILY (TZ400, TZ400W) for 5 Years Equivalent of AGSS.
This is a subscription, and the licence extends your current TZ400 or TZ400W appliance so you can later purchase one of the SonicWall TZ400 Family (Gen 7 TZ270 or Gen 8 TZ280?) via the Secure Upgrade (Appliance Only) with no Attached Subscription (Existing SonicWall Customers Only).
The SOHO 250 and SOHO 250W go End of Support on 1st August 2026, so you would need to upgrade the hardware before then.
More information: SonicProtect Subscription | SonicWall
Warranty & Support
3-Yrs hardware/3-Yrs support, firmware updates
Dynamic Support 24x7