If I make exactly the same assumption concerning the R6400 I replaced as a result of security vulnerabilities, challenges with 3rd get together firmware, and issues around updates, That could be a power draw of 11.61w. 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