I am seeing the same issue as of today with a Customer. Was there any resolve to this issue? They even have Ent Z3 in the environment today with no issues with ADV SEC MX's. Could be purely a Z4 thing, regardless of documentation. We do have a case in, though wanted to reach out as well. ... View more

I just confirmed, the power supplies are the same as in the MS390, MA-PWR-CORD-XX are compatible. MA-PWR-350WAC (MS390) | Meraki AC Power Supply (cisco.com) ... View more