Cisco C3850-NM-4-10G Network Expansion Module

The Cisco C3850-NM-4-10G Network Expansion Module adds four 10 Gigabit SFP+ uplink ports to Cisco Catalyst 3850 Series switches, delivering high-speed fiber connections for access, distribution, and core layers in enterprise networks. Each port supports 10 Gbps over SFP+ optics, and the module installs in a modular uplink expansion slot as an internal switch expansion module. It is compatible with Cisco Catalyst 3850 switches and is designed to increase uplink capacity and overall throughput in campus networks, data center access layers, and other high-performance environments. Technical details include Manufacturer Part Number (MPN) C3850-NM-4-10G and Alternate Part Number C3850NM410G. Common replacements are Cisco C3850-NM-2-10G, Cisco C9300-NM-4G, and Cisco C9300-NM-8X for users planning upgrades or migrations.