cisco Ucs 2304 Fabric Extender The Cisco Ucs 2304 Fabric Extender Has Four 40 Gigabit Ethernet, Fcoe-capable, Quad Small Form-factor Pluggable (qsfp+) Ports That Connect The Blade Chassis To The Fabric Interconnect. Each Cisco Ucs 2304 Can Provide One 40 Gigabit Ethernet Ports Connected Through The Midplane To Each Half-width Slot In The Chassis, Giving It A Total Eight 40g Interfaces To The Compute. Typically Configured In Pairs For Redundancy, Two Fabric Extenders Provide Up To 320 Gbps Of I/o To The Chassis.