hi @Gatortrax , the MX250 uses 250WAC PSU's whilst the 3850's use either 350, 715 or 1100WAC PSU's.
I wouldn't try it. But part of me wants to know what happens.....
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.