The Cisco C3KX-NM-10G is a 4 port network module for the 3750-X and 3560-X series of enterprise switches. The NM-10G allows for 4 additional uplinks (two 10GbE SFP ports and two regular SFP ports) to be added to 24 or 48 port 3750-X and 3560-X switches, and is compatible with most standard Cisco 1 and 10G optics. This module is ideal for network applications that require higher speed links then the 1G ports provided on the base 3560-X or 3750-X appliances.
Compatible optics for this module include:
SFP-H10GB-CU (2, 2-5,M)
SFP-H10GB-ACU (7, 10M)
SFP-10G-AOC (1, 2, 3, 5, 7M)