Each EX3200 Switch supports optional front-panel EX-UM-2X4SFP Uplink Module with pluggable optics for high-speed backbone or link-aggregation connections between wiring closets and upstream aggregation switches. EX-UM-2X4SFP Uplink Module can be installed without powering down the switch, enabling users to add high-speed connectivity at any time or to migrate from GbE to 10 GbE uplinks, delivering the ultimate in flexible, high-performance interconnectivity.