Hi,Thanks for your revert. Can I know the that any particular software is there for ASA 5525x. Which are the software need to be download from portal and we are going to install into the VM only. If possible share the prerequisite of VM as well, for your reference I have mentioned the BOM as below.ASA5525-FPWR-BUNASA 5525-X with FirePOWER Svcs. Chassis and Subs.