C3KX-NM-10G Network Modules Catalyst 3560-X Series Catalyst 3K-X 10G Network Module option PID. The Cisco Catalyst 3750-X and 3560-X series switches support an optional network module for the uplink ports. The configuration of the default switch does not include the uplink module, the client has the possibility to choose between network modules of 4 ports GbE (3KX-NM-1G) or 2 ports 10GbE (3KX-NM-10G) at the moment of the purchase of the switch. The uplink 10GbE module has 4 physical ports (2 SFP + ports and 2 regular SFP ports). The SFP + interface supports 10GbE and GbE ports, allowing the client to use their investment in GbE SFP and upgrade to 10 GbE when the business demands it, without having to do a complete update of the access switch. The uplink module is hot-swappable. The 10 GbE network module can be used in any of the possible combinations.