-IMSourcing C3KX-NM-10G Network Module - For Data Networking, Optical Network10 Gigabit Ethernet - 10GBase-X4 x Expansion Slots - SFP+, SFPApplication/Usage: Data NetworkingApplication/Usage: Optical NetworkEthernet Technology: 10 Gigabit EthernetNetwork Technology: 10GBase-XNumber of Total Expansion Slots: 4Expansion Slot Type: SFP+Expansion Slot Type: SFPCompatibility: Catalyst 3750-X Series Switches Catalyst 3560-X Series Switches