The Cisco C3850-NM-4-1G is a network module designed for use with Cisco Catalyst 3850 Series switches. Specifically, it provides four 1 Gigabit Ethernet (1GE) SFP ports, which allow for fiber optic connectivity. This module enhances the flexibility of the 3850 switches by adding additional uplink or downlink ports. It’s often used to connect the switch to other network devices over fiber connections.
