The Juniper EX4400-EM-1C is a 100GbE QSFP28 expansion module designed for compatible Juniper EX4400 Series Ethernet switches. It adds a high-speed 100 Gigabit Ethernet uplink, enabling faster connectivity between access, aggregation, and core network layers. Ideal for enterprise campus and data center deployments, the module provides scalable bandwidth for growing network demands while supporting advanced Junos OS networking features. When installed in a compatible EX4400 switch, it also supports enterprise-grade security capabilities, including MACsec AES-256 encryption, helping protect data transmitted across the network. The EX4400-EM-1C is an excellent solution for organizations requiring reliable, high-performance uplink connectivity within Juniper's AI-driven networking environment.