If I make the same assumption with regards to the R6400 I replaced as a result of security vulnerabilities, troubles with 3rd get together firmware, and issues over updates, that is a energy draw of 11.61w. The delta is https://macktechbiz.com/blogs/news/unleashing-the-power-of-micro-appliance-pc-firewalls-a-revolution-in-open-source-firewall-solutions-with-zenarmor-and-opnsense-support