| Product Title (Ultra-Short) | QSFP-40G-ER4 Comp |
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| Product Title (Short) | Dell EMC 3CSFP91 Compatible QSFP+ 40GbE |
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| Product Title (Medium) | Dell EMC QSFP-40G-ER4 Comp QSFP+ SM Module - 40GBase-ER4Q - Lifetime Warranty |
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| Product Title (Standard) | Dell EMC 3CSFP91 Compatible QSFP+ Module - 40GBASE-ER4 - 40GE Gigabit Ethernet QSFP+ Single Mode Fiber (SMF) - 40 km DDM |
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| Product Title (Long) | Dell EMC 3CSFP91 Compatible QSFP+ Module - 40GBASE-ER4 - Single Mode Fiber (SMF) - 40GE Gigabit Ethernet QSFP+ - LC 40 km - 1270nm to 1330nm - DDM |
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| Product Title (AMZ) | Dell EMC 3CSFP91 Compatible QSFP+ Module - 40GBASE-ER4 - Single Mode Fiber (SMF) - 40GE Gigabit Ethernet QSFP+ - LC 40 km - 1270nm to 1330nm - DDM (QSFP40GER4ES) |
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| Title Ingram (Part 1) | Dell EMC QSFP-40G-ER4 Comp - |
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| Title Ingram (Part 2) | QSFP+ Module - SM Transceiver |
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| Website Product Headline | 40 Gbps | Single Mode Fiber | LC | 40 km (24.8 mi) | Lifetime Warranty |
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| Bullet 1 | 100% Dell EMC 3CSFP91 COMPATIBLE: Designed, programmed and tested to work with compatible Dell EMC switches and routers to deliver reliable 40GbE connectivity |
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| Bullet 2 | TECHNICAL SPECS: 40GBASE-ER4 | 40 Gbps | Single Mode | LC Connector | 1270nm to 1330nm | Digital Diagnostic Monitoring (DDM) | Distances up to 40 km (24.9 mi) |
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| Bullet 3 | TESTED FOR OEM HOST COMPATIBILITY: Hot-swappable in Dell EMC routers and switches; DDM support reports the transceiver's status to most SNMP network management tools |
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| Bullet 4 | THE IT PRO’S CHOICE: Designed and built for IT Professionals, this SFP module is backed for life (lifetime of module, not network switch), including free lifetime 24/5 multi-lingual technical assistance |
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| Bullet 5 | WORKS WITH MSA COMPLIANT SWITCHES: Also works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules |
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| Bullets (Compact) | Dell EMC 3CSFP91 Compatible QSFP+ - 40GBASE-ER4 40 Gbps - 40GbE Module - 40GE Gigabit Ethernet QSFP+ 1270nm to 1330nm Single Mode Transceiver - 40 km (24.9 mi) - LC Connector DDM - Hot-Swappable & MSA Compliant - Lifetime Warranty |
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| Bullets (Consolidated) | 40GBASE-ER4 40 Gbps Gigabit Ethernet - 1270nm to 1330nm Single Mode - Up to 40 km (24.9 mi) - LC Connector DDM - Hot-Swappable and MSA Compliant - Backed by a StarTech.com lifetime warranty on the module itself not the life of the OEM switch/router and will not void your OEM warranty |
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