Extreme Networks 4-port SFP+ Module - For Data Networking, Optical NetworkOptical Fiber10 Gigabit Ethernet, Gigabit Ethernet - 10GBase-X, 1000Base-X4 x Expansion Slots - SFP+
Extreme Networks Versatile Interface Module VIM5-4X - Expansion module - 10 GigE - 10GBase-X