HP ProLiant ML310e with ESXI 6.0 license

[cor9003]

Hello, I've just bought a HP proliant ML310e and installed the HP image for ESXI 6.0 (VMware-ESXi-6.0.0-Update1-3073146-HP-600.9.4.34-Nov2015.iso ). All is working fine, but using vSpehere windows clients when connect with the ESXI tell me "Your evaulation license will expire within 60 days. When the evaluation license expire, the ESXI host might stop managin all virtual machines .... In order to manage these machines you must obtain and assign a license to your ESXI host"

But in the website form VMware where I downloaded the HP image for ESXI say "End User License Agreement: Not applicable"

Do I need this licenseto install in the HP server  ?. If yes, How do I get it ?

Thanks in advance for the support