Separate names with a comma.
I recently upgraded my 2013 rMBP to High Sierra.
but then when i was freeing up disk space the disk space from the Finder and Disk Utility...
iMac: late 2009 or newer
MacBook/MacBook (Retina): late 2009 or newer
MacBook Pro: mid-2010 or newer
MacBook Air: late 2010...