Edge-Core L3 Gigabit Metro Ethernet Switch - Manageable - 28 x Expansion Slots - 1000Base-X, 10GBase-X - Uplink Port - Modular - 4, 24 x Expansion Slot, Expansion Slot - Optical Fiber - Gigabit Ethernet, 10 Gigabit Ethernet - 24 x SFP Slots - 4 Layer Supported - Power Supply - Redundant Power Supply - Standalone - 5 Year: