The Cisco 40GBASE QSFP (Quad Small Form-Factor Pluggable Plus) modules offer customers a wide variety of high-density 40 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider transport applications. Product Name: 40GBASE-SR4 QSFP XCVR Module with Conn Product Type: QSFP Green Compliant: Yes Green Compliance Certificate/Authority: RoHS-6 Compatibility: Cisco Nexus 3064 Switch, MSA Compliant Product Model: QSFP-40G-SR4 Dimensions: 0.5\" Height x 0.7\" Width x 2.9\" Depth Application/Usage: Data Networking, Optical Network Interfaces/Ports: 1 x 40GBase-SR4 Interfaces/Ports Details: 1 x MPO 40GBase-SR4 Network Form Factor: Hot-swappable Data Transfer Rate: 40 Gbps Gigabit Ethernet Connectivity Media: Multi-mode Optical Fiber 40GBase-SR4 Interface Type: 40GBase-SR4 Number of Ports/Channels: 1