The Catalyst WS-C3560CX-8PT-S is a PD/PSE product, which means that the switch can behave like both a Power Device (PD) and Power Source Equipment (PSE). This switch will be powered on by the PoE voltage derived from its uplink ports
Gi0/10 or both at the same time. It can also be combined with the voltage supplied by the external auxiliary power supply (AUX).
At the time of writing Cisco UPOE is available on Cisco Catalyst 4500E Series and Catalyst 3850 Series Switches to power your compact switch. This means you can connect and power your switch via cable, minimum Category 5E, to a Cisco 4500E with a UPOE line card or Cisco 3850 with builtin UPOE.
Its important to know, that your particular switch can also be powered by either PoE or PoE+, if you wish to do so. The available PoE on the switch itself will only be 20W though (for 2 x PoE+).
When your compact switch is powered via UPOE you can use the command
show env power to check the available power:
Switch# show env power
Power Source Type Power(w) Mode
-------------- -------------- --------- ---------
A.C. Input Auxilliary 80(w) Available
Gi0/9 Type2 30(w) Available
Gi0/10 Type2 30(w) Available
Available : The PoE received on this link is used for powering this switch and
providing PoE pass-through if applicable.
You can see on the below table, how much PoE is available, when your switch is power via PoE:
The following will show the comparison between UPOE and PoE: