CRS32824P4SRM is a 28 independent port switch, it has 24 Gigabit Ethernet ports, which offer different power output options Passive PoE, low voltage PoE, 802.3af/at (Type 1 \"PoE\" / Type 2 \"PoE\") with autosensing PoEOut is passed over mode B pins (4,5)(7,8) The four SFP ports provide up to 10 Gbps connectivity options via either optical fiber or Ethernet modules (not included) CRS32824P4SRM comes in a 1U rackmount case with 100240 V AC 500 W power supply builtin The device consumes up to 44 W leaving guaranteed 450 W (3150 W per every 8 Ethernet ports) to power y