Cisco QSFP Module - For Data Networking, Optical NetworkCisco QSFP Module For Data Networking, Optical Network 1 x MPO 12 40GBASE SR4 Network Optical Fiber Multi mode 40 Gigabit Ethernet 40GBase SR40. 15 km Maximum Distance Hot swappable VPN: QSFP 40G SR4= SKU: 156411NDN UPC: 882658439759 Hot swappable input output device that plugs into a 40 Gigabit Ethernet Cisco QSFP port Interoperable with other IEEE compliant 40GBASE interfaces where applicable Certified and tested on Cisco QSFP 40G ports for superior