MaxLink POES-8-7P-NOPS, (8) port unmanaged Desktop Rackmount (no power adapter included) 24V Passive 48V 802.3af at Active PoE switch. (8)10 100 Mbps RJ45 ports with 7 PoE ports which can support passive (24V 48V), and Active 48V 56V (802.3af, 802,3at) devices at same time. Ports 1-7 inject 24V or 48V DC power per port. Switch has 3 power supply inputs. Switch works with Dual power supply operation for either redundancy, load balancing or mixed voltage. If you use a 24V power adapter a 48V power adapter both voltages are available on ports 1-7. Switch has automatic voltage detection. If you plug a 48V power source you can power RocketM5-Ti, 802.3af cameras, VoIP phones, UAP-PRO, UAP-AC and everything powered by 48V 802.3af and 802.3at. If you use 24V power adapter any 24V devices including many MikroTik RouterBoards and Ubiquiti Unifi-UAP and UAP-LR will work. Each PoE port has Dual PTC self resetting fuses. Port 8 can be used as an uplink port and can be powered by a passive PoE Mode B (4,5( ) i 7,8 (-) 24V 1.25A PoE injector. Switch is Metal Housing, Dimensions: 192 x 82 x 27mm, Rack mount kit MXL-RF-PS is available to purchase seperate. No power adapter included. Recommended models for redundancy and dual power GM-2440 (24V 2,5A) for 24V GM-4820(48V 2A) for 48V.