I'm studying MCU 5310 and have some queries that need to be clarified as follows:
1. About stacking function: what is the difference between stacking function on MCU 5300 series and cascading function on MCU 4200, 4500?
2. About the compatibility: Can MCU 5310 or 4501 cascade with MCU 4205?
3. Can MCU 4205 connect sites that used SX20 or QuickSet C20?