Below is the data sheet of Cisco Catalyst 3560 Series Switches:
Referring to Table 3, the Maximum Power Consumption for Cisco Catalyst 3560G-48PS is as follows:
- 590W (Cisco Catalyst 3560G-48PS)
- Dissipated power: 220W, 690 BTUs per hour
- PoE: 370W
My understanding is, when the switch is powered up, it will draw 590W from which 370W is reserved for PoE, regardless of whether any powered devices are connected or not. Kindly correct me if I'm wrong.