Enabling Modern Auth in SfB Server 2015

Hi all,  We are embarking on the modern auth journey and are looking to tackle Skype.  Currently we are running SfB Server 2015 on-prem with the latest CU.  Can anyone confirm/deny if Basic auth still works after you enable Modern Auth in SfB?  We still have a good amount of older Macs running Lync 2011 and also have some conference phones that don't have any documentation on whether or not they can handle Modern auth.  Thanks!