The Juniper EX4400-EM-1C is a high-performance expansion module designed to enhance the connectivity capabilities of the EX4400 line of Ethernet switches. This single-port module enables enterprise networks to integrate 100 Gigabit Ethernet uplinks directly into their access layer, facilitating high-speed data transfer to core or distribution layers. Engineered for modern campus environments, it supports advanced security features including Media Access Control Security (MACsec) with AES-256 encryption, ensuring data integrity across the link. This component is essential for organizations looking to future-proof their infrastructure with scalable bandwidth and secure, reliable performance within the Juniper Mist AI-driven ecosystem.