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DS-3E1552P-SI(O-STD)
L2, Smart Managed, 48 Gigabit PoE ports, 2 Gigabit RJ45, 2 Gigabit SFP uplink ports, 802.3af/at, PoE power budget 470W, max. 300 meter long distance PoE transmission, PoE watchdog, VLAN, QoS, SNMP, Port Mirroring, Storm Control, Visualized Topology Management, Network Health Monitor, Real-Time Alarm Push and Video Control and Preview