Hoi - Here is the data sheet for it: https://www.bechtle.com/shop...
See page 5 middle (what exactly it "does" in the G10) and the link then to the ILo Quickspecs: https://www.hpe.com/psnow...
The way I read it: You don't have to subscribe at all (but you can have HP support subscriptions to it... if it would be necessary then...).
Happy Holidays and Lg