RB5009UPr+S+IN PSU Only 96w and Max power consumption 150 Watts!!
Do we need to buy additional Power Supply?
If you want to run POE on all ports, probably. Note that it isn’t at all unusual to ship a POE-capable box with a default PSU that won’t power all ports.
Do we need to buy additional Power Supply?
According to specs, RB5009UPr+S+IN reserves 20W for its own usage, leaving max 130W for devices running on PoE supply. Or 76W with the included PSU.
So if the total power consumption of attached PoE devices stays below 76W (which is the case for many applications), the included PSU will do it.
If above, some 3rd party >=100W 48-57V PSU is required.