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1. < 3.5W Low Power Consumption. 2. Link Up to 20 km via Singlemode OS2. 2. LC Duplex Connector, DFP+PIN. 3. Fully Compatible with 100+ Vendors. 4. For Data Center and 40G Ethernet Applications. 5. Hot Pluggable QSFP+ MSA Compliant.See more
The Cisco QSFP-LR4-40G-20 compatible 40G QSFP+ LR4 transceiver module is equipped with LC duplex connectors, reaching a link up to 20km over OS2 single-mode fiber (SMF). This 40G optical transceiver comes with a bidirectional 4-channel QSFP+ connector, enabling a total of 40 Gbps bandwidth by each channel carrying a 10 Gbps data rate. DOM/DDM (digital diagnostics monitoring) function is supported on the QSFP 40G fiber optic transceiver to achieve real-time operating parameters monitoring.
QSFPTEK manufactured 40GBASE-LR4 QSFP+ module is compliant with QSFP+ MSA and 40GBASE-LR4 specifications. Besides, the QSFP LR4 optic has been tested on host devices to ensure full compatibility with Cisco equipment, such as data center switches, enterprise routers, and server network interface cards (NICs). The third-party 40G SFP module is an ideal substitute to the QSFP-40GE-LR4 QSFP+ 40G transceiver at an affordable price, providing a cost-effective compatible solution for high-performance 40G connectivity.
LR4 40G QSFP optics cater to 40 Gigabit Ethernet (40GbE) optical fiber connections, ideal for high-performance and long-distance applications in the data center, enterprise core and distribution layers, campus networks, metro networks, etc.
Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.


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Compatible Cisco
Transceivers type QSFP-LR4-40G-20
QSFPTEK's sales team is professional and patient, and this transceiver performs well and is affordable, which makes my project more cost-effective.
Transceivers typeQSFP-LR4-40G-20
CompatibleCisco
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Two weeks in with this 40G module on the C9400-LC-12QC – no glitches, touch wood. Decent price, tidy bit of kit, and no complaints on the service front. Probably use them again for the next job
Transceivers typeQSFP-LR4-40G-20
CompatibleCisco
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Needed 20km optics to bridge our Huawei CE6850-48S6Q-HI core to a Juniper QFX5120. These LC duplex modules nailed 18.2km on OS2 single-mode with very low loss.
Transceivers typeQSFP-LR4-40G-20
CompatibleCisco
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For application within 20km reach at 40G without breaking the bank, this module is a solid choice.
Transceivers typeQSFP-LR4-40G-20
CompatibleCisco
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Compared with the original module, the price is only a small fraction, but the performance is not reduced.
Transceivers typeQSFP-LR4-40G-20
CompatibleCisco
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