Cisco C3850-NM-4-1G 4-Port 1GE SFP Network Module for Catalyst 3850 Series

Expand your Cisco Catalyst 3850 switch with this fully refurbished and tested C3850-NM-4-1G network module. This 4-port Gigabit Ethernet SFP expansion module delivers reliable uplink connectivity for enterprise campus, branch office, and data center deployments — at a fraction of the cost of new.

Key Specifications

• Part Number: C3850-NM-4-1G
• Ports: 4 x 1 Gigabit Ethernet SFP uplink ports
• Forwarding Rate: Up to 70 Mpps (Layer 2 and Layer 3)
• Aggregate Bandwidth: 4 Gbps line-rate across all ports
• Form Factor: Hot-swappable plug-in module
• Compatibility: All Cisco Catalyst 3850 24-port and 48-port switches with modular uplink bays
• Supported Technologies: StackWise-480, QoS, EnergyWise, Cisco UADP ASIC
• SFP Support: Any combination of standard 1G SFP transceivers (Cisco and compatible)

Why Buy from Reef Telecom?

• Industry-Leading 10-Year Warranty — the longest in the refurbished telecom industry
• Free Shipping on orders over $300
• Every unit professionally inspected, tested, and certified before shipping
• Trusted by enterprise IT teams and resellers nationwide

The C3850-NM-4-1G is ideal for organizations running Cisco Catalyst 3850 series switches (e.g., WS-C3850-24T, WS-C3850-48P) that need flexible 1GE fiber uplinks without upgrading to 10G. Perfect for campus aggregation, branch office convergence, and phased network upgrades.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.