EX4400-EM-4S Juniper 4x10G SFP+ Extension Module for EX4400 Series

The EX4400-EM-4S is a high-speed expansion module designed for Juniper EX4400 switches, providing an additional four 10G SFP+ uplink interfaces. Ideal for environments needing flexible fiber uplinks and scalable bandwidth, this module enables efficient distribution, aggregation, and high-speed connectivity across enterprise networks. EX4400-EM-4S Specifications Item Description Model EX4400-EM-4S 10G SFP+ Extension Module Brand Juniper Function Adds 4 x 10G SFP+ uplinks to EX4400 series switches Ports 4 x 10G SFP+ (supports 1G or 10G, not mixed at same time) Default Port Mode 10G (can switch to 1G in CLI) Compatibility Exclusive to EX4400 Series (front slot installation) Hot Swap Supported — must offline via CLI before removal LED Indicators Per-port status indicators Software Requirement Junos OS 21.1R1 or newer Cooling Passive (no fan) Dimensions Fits standard 1U switch form factor