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Dell QSFP-40G-LM4 40G QSFP+ LM4 Universal Transceiver 140m on OM3 160m on OM4 and 1km on SMF

Mfr. Part #: QSFP-40G-LM4
Brand: Dell
Condition: Refurbished
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QSFP-40G-LM4

Dell QSFP-40G-LM4 40G QSFP+ LM4 Universal Transceiver 140m on OM3 160m on OM4 and 1km on SMF

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QSFP-40G-LM4 Overview

DELL QSFP-40G-LM4 40g Qsfp+ Lm4 Universal Transceiver 140m On Om3 160m On Om4 And 1km On Smf

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faqs

Frequently Asked Questions

What is the primary use case for the Dell QSFP-40G-LM4 transceiver? +
The Dell QSFP-40G-LM4 is designed for high-density 40GbE connectivity within data centers. It excels in short to intermediate-reach applications, utilizing multimode fiber to bridge the gap between standard SR4 and long-range LR4 optics, providing a cost-effective solution for link distances up to 160 meters on OM3 or 300 meters on OM4 cabling.
Does the QSFP-40G-LM4 support breakout configurations? +
This module is typically deployed as a 40GbE link rather than a breakout. While some QSFP+ ports allow for channelization, the LM4 is specifically optimized to provide a robust 40G signal across its rated distance using MPO-12 connectivity, ensuring signal integrity without the complexity of splitting the signal into individual 10G lanes.
What type of optical interface and cable does this transceiver require? +
The QSFP-40G-LM4 features an MPO-12 optical interface. To ensure optimal performance and prevent potential damage to the transceivers, you must use high-quality MPO multimode fiber patch cords. Always ensure the fiber end-faces are clean before installation to maintain low insertion loss and reliable data transmission.
Is the Dell QSFP-40G-LM4 compatible with non-Dell networking hardware? +
While specifically branded for Dell networking environments, transceiver compatibility is often dependent on the switch firmware's strictness regarding vendor IDs. For the best performance and to avoid potential interface errors, it is recommended to use this module within validated Dell switch architectures for which it was originally engineered and tested.
How does the performance of the LM4 compare to the standard SR4 module? +
The primary advantage of the LM4 over the SR4 is reach. While the SR4 is limited to roughly 100 to 150 meters depending on fiber quality, the LM4 extends that range significantly. This makes it the ideal choice for larger server rooms or campus environments where equipment racks are spaced further apart than standard short-range optics allow.
What are the power consumption requirements for this QSFP+ module? +
The QSFP-40G-LM4 operates within the standard power envelope for 40G QSFP+ transceivers. It is designed to be power-efficient, minimizing the thermal load on your switch line cards. When planning high-density deployments, ensure that your switch chassis has adequate airflow and cooling capacity to accommodate the cumulative power draw of all populated ports.
Can this transceiver be used in a 10GbE network environment? +
This module is designed exclusively for 40GbE operations. It cannot be used to negotiate or step down to 10GbE speeds. Your switch ports must be configured for 40G operation to recognize and initialize the transceiver correctly. Attempting to use this in a 10G port will result in a connection failure.
What environmental conditions are necessary for reliable operation? +
For consistent performance, the module should operate within the manufacturer’s specified temperature range, typically found in standard climate-controlled data centers. Avoiding extreme heat or rapid temperature fluctuations is essential. Proper port ventilation and the use of dust plugs when the transceiver is not in use are best practices for maintaining longevity.
How can I request a bulk quote for multiple QSFP-40G-LM4 units? +
For large volume orders of the QSFP-40G-LM4, please reach out to our sales team directly through the 'Request a Quote' button on our product page. We specialize in enterprise-level procurement and can provide competitive pricing structures and availability updates tailored to your project’s specific quantity requirements.
Why should I choose BuyRouterSwitch.com for my enterprise networking hardware? +
BuyRouterSwitch.com is a trusted source for authentic enterprise hardware. We provide a secure procurement process for IT managers and system integrators. By sourcing directly through our platform, you ensure that you are receiving genuine components that meet industry standards, supported by our experienced sales professionals who understand the complexities of building high-performance network infrastructures.
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