Here is where the plugins are located:
MAC:
VST3: Macintosh HD/ Library/ Audio/ Plug-Ins/ VST3
AU: Macintosh HD/ Library/ Audio/ Plug-Ins/ Components
AAX : Macintosh HD/ Library/ Application Support/ Avid/ Audio/ Plug-Ins
WINDOWS :
VST3 : C:\\Program Files\\Common Files\\VST3
AAX : C:\\Program Files\\Common Files\\Avid\\AudioPlug-ins