The Cisco C4KX-NM-8SFP+ Catalyst 4500-X 8 Port 10GE Network Module provides additional SFP or SFP+ ports to any of the compatible 4500-X series switches.
This 4500-X expansion module supports both SFP and SFP+ transceivers, allowing expansion of your existing 4500-X switches in a variety of ways. Supported 10G transceivers include the SFP-10G-SR, SFP-10G-LR and SFP-10G-ZR SFP+ modules. 1G transceivers compatible with this module include the GLC-SX-MMD, GLC-LH-SMD, and copper GLC-T modules. Additional pluggable transceivers such as AOC and H10GB cables are also compatible with this module. For a full list of compatible modules, please visit Cisco’s compatibility guide.