Today i had to activate a CacheCade license on a Avago 9361-4i, accorded to the documentation you need to use the Windows controller manager to activate the license because the built-in configurator doesn't allow to enter the key.
Come on ... Windows ? Really ?
With chance we can use MegaCli !
First you need to get the SafeID
MegaCli64 -EFL -GetSafeId -a0
Generate your serial key and now, enter the key
MegaCli64 -ELF -Applykey key "XXXXXXXXXXXXX" -a0
If the key is correct, you'll get an error asking to reboot to finish the activation.
If you get an "argument error", check the key.