Cisco IE-2000-4S-TS-G-L Ethernet Switch - Manageable - 6 x Expansion Slots - 100Base-X, 1000Base-X - Uplink Port - 4 x Expansion Slot, 2 x Expansion Slot - Optical Fiber - Fast Ethernet, Gigabit Ethernet - 6 x SFP Slots - 3 Layer Supported - Desktop, Rail-mountable: