This one, https://documentation.meraki.com/MS/Other_Topics/Switch_ACL_Operation, highlights the MS390 limitation on the VLAN field about halfway down. For the other limitations it’s best to look at the firmware release notes, the latest ones have been posted here, https://community.meraki.com/t5/Switching/New-MS-14-29-stable-release-candidate-firmware-released-a-few/m-p/128281
... View more