Detail overview DELL 469-4251 Powerconnect 8164 Layer 3 48port Switch . Key Features : Product Type : Layer 3 Switch Total Number Of Network Ports : 48 Number Of Network (rj-45) Ports : 48 Port/expansion Slot Details : 48 X 10 Gigabit Ethernet Network, 2 X 40 Gigabit Ethernet Expansion Slot, 1 X Expansion Slot Media Type Supported : Twisted Pair Ethernet Technology : 40 Gigabit Ethernet Network Technology : 10gbase-t Number Of Total Expansion Slots : 3 Expansion Slot Type : Qsfp+ Layer Supported : 4 Manageable : Yes Poe (rj-45) Port : No Input Voltage : 110 V Ac, 220 V Ac Form Factor : Rack-mountable Compatible Rack Unit : 1u Condition : Refurbished. Availability : In Stock. Warranty : 30 Days.