Proxmox VE Basic

+ Access to Enterprise Repository
+ Stable software updates
+ Support via customer portal
+ 3 support tickets
+ Response time within one business day

Subscription period is one year from purchase date.
Each Proxmox VE server needs a subscription with the right CPU-socket count.

All details here

You can read about this and other PROXMOX products here

Contents of delivery:
✔ distribution Proxmox VE (media or download link from the Internet)
✔ subscription key (in electronic form)
✔ subscription key (on paper form)