Hi @nmemmert ,
Yes, both the MR45 and MR55 can run in Run Dark mode.
@SoCalRacer, thanks for the heads-up. I just tested this myself and Run Dark does disable both the status LED and ethernet LEDs on the MR45/MR55.
I also tested and discovered that the "Blink LEDs" tool overrides Run Dark mode.
I updated the Run Dark Mode documentation to reflect this.
Cheers!
Cameron Moody | Product Manager, Cisco Meraki