Cisco C3KX-NM-10G 2 port 10GbE SFP+ 2 port SFP Network Module for Catalyst 3750-X & 3560-X Switches

Two 10GbE SFP+ ports network module with four physical ports with two SFP+ andtwo regular SFP ports.The Cisco Catalyst 3750-X Series and 3560-X Series Switches support fouroptional network modules for uplink ports. The default switch configurationdoesn't include the uplink module; at the time of switch purchase the customerhas the flexibility to choose from the network modules.