Range/Series Overview
IMPORTANT: This Range/Series overview section describes the range of which this product belongs. Features of different versions might be mentioned and may not apply to the specific product on this page. Please view Specs for specification of product.
40 Gbps | Single Mode Fiber | LC | 40 km (24.8 mi) | Lifetime Warranty. The QSFP40GER4ES is a Cisco QSFP-40G-SR4-S compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-SR4 compliant networks, with a maximum distance of up to 40 km (24.8 mi).
Technical Specifications:
Wavelength: 1311nm
Maximum Data Transfer Rate: 40 Gbps
Type: Multi Mode Fiber
Connection Type: MPO Connector
Maximum Transfer Distance: 40 km (24.8 mi)
MTBF: 8,596,956 hours
Power Consumption: < 1.6W
Digital Diagnostics Monitoring (DDM): Yes
This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.
StarTech.com SFPs
All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.
Specification Summary
Product Description
Startech Dell EMC 3CSFP91 Compatible QSFP+ Module, 40GBASE-ER4, Single Mode (SMF) Fiber, 40GE Gigabit Ethernet QSFP+, LC 40 km, 1270nm to 1330nm, DDM, 40GbE QSFP+ Active Optical Cable - Lifetime Warranty (QSFP40GER4ES) - QSFP+ transceiver module - 40GbE
Device Type
QSFP+ transceiver module - LC single-mode
Form Factor
Plug-in module
Cabling Type
40GBase-ER4Q
Data Transfer Rate
40 Gbps
Optical Wave Length
1311 nm
Max Transfer Distance
40 km
OEM Manufacturer Equivalent Part Number
Dell EMC QSFP-40G-ER4
Dimensions (WxDxH)
5.84 cm x 1.39 cm x 1.26 cm
Manufacturer Warranty
Limited lifetime warranty