The Dell QSFP+ transceiver delivers fiber connectivity to extend the range of your network. This hot-pluggable transceiver with QSFP (Small Form Factor Pluggable) footprint features a duplex LC connector. The Dell networking 40GbE ER4 SMF QSFP+ transceiver provides 40GbE connectivity up to 40 km. Additionally, it provides a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power, and transceiver supply voltage. Device Type: QSFP+ transceiver module Form Factor: Plug-in module Cabling Type: 40GBase-ER4 Data Transfer Rate: 40 Gbps Data Link Protocol: 40 Gigabit Ethernet Max Transfer Distance: 24.9 miles Designed For: Force10 Z9500 Device Type: QSFP+ transceiver module Form Factor: Plug-in module Connectivity Technology: Wired Cabling Type: 40GBase-ER4 Data Link Protocol: 40 Gigabit Ethernet Data Transfer Rate: 40 Gbps Max Transfer Distance: 24.9 miles Designed For: Dell Force10 Z9500