StarTech.com Dell EMC QSFP-40G-ESR4 Compatible QSFP+ Module - 40GBASE-SR4-40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 400m - 850nm - DDM (QSFP40GESR4E)

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Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.

•100% Dell EMC compatible: Meets MSA standards and is designed, programmed and tested to perform identically to the Dell EMC qsfp-40g-esr4 transceiver module
•Lifetime : this Dell EMC qsfp-40g-esr4 compatible QSFP+ module is backed by a lifetime from StarTech
•Sfp fiber module performance: MAX data transfer rate: 40. 00 Gaps
•Wavelength: 850nm
•Type: Multi mode
•connection Type: MPO
•maximum transfer distance: 400 M (1312 ft. )
•Power consumption: low power consumption - simple installation: This 40GBase-SR4 SFP module can be plugged directly into Dell emc’s routers or switches and is hot-swappable making upgrades and replacements seamless by minimizing network disruptions
•Industry leading product support: all StarTech SFP & SFP+ transceiver Modules are backed by free Lifetime multilingual technical support before and after purchase. StarTech offers a wide variety of sfp and QSFP modules and Direct-Attach SFP and QSFP cables,  providing the convenience and reliability you need to ensure dependable network performance.