StarTech.com Dell EMC QSFP-40G-LR4 Compatible QSFP+ Module - 40GBase-LR4Q Fiber Optical Transceiver (QSFP40GLR4ES) - 100% Dell EMC QSFP-40G-LR4 compatible guaranteed - Lifetime Warranty on all SFP modules - Meets or exceeds OEM specifications - Our SFP modules comply w/ MSA industry standards - Low power consumption of < 1.3W - Hot-swappable w/ Single Mode modules: