Sun Dual 10GbE Fabric Expansion Module is fabric expansion module mezzanine card using Sun's Multithreaded 10GbE Controller. This FEM card mounts on the FEM slot of the blade servers and connects the blade servers to the 10GbE ports of the Sun NEM (Network Express Module) such as Sun Blade 6000 10GbE Multi-Fabric Express Module for the Sun Blade 6000 server chassis.