The power supply sets the PoE voltage
The switch has no onboard voltage converter, so the ports pass on the same voltage that comes from the power source. With a 24 V power supply devices get 24 V PoE; with a 48 V unit they get standard IEEE 802.3af/at power. The manufacturer names the MikroTik 24HPOW, 48POW and 48V2A96W as compatible, and a battery pack can be used too. Non-blocking throughput is 36 Gbit/s.
