EX 4200 and EX 3200 4-Port 1G SFP Uplink Module (optics sold separately)
Part Number: EX-UM-4SFP
SFP+ uplink module—Provides two ports for 10-gigabit small form-factor pluggable (SFP+) transceivers when configured to operate in 10-gigabit mode or four ports for 1-gigabit small form-factor pluggable (SFP) transceivers when configured to operate in 1-gigabit mode. The model number of the uplink module is EX-UM-2X4SFP.