Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Fiberso QSFP+ 40G Module ER4 40Km 1271-1331nm LC SM Fiber Optical Transceiver Compatible with SwitchesWe offer three years warranty, and lifetime technical support! Compatible with all the switch brands in the market, please feel free to contact! PN Description Data Rate Reach Connector Wavelength(nm) TX RX Fiber Output PowerdBm Sensitivity FO QSFP40G SR4 QSFP+ SR4 40Gb s 100m MPO 850 VCSEL PIN MM 7. 6~2. 4 < 9. 5 FO QSFP40G IR4 QSFP+ 2KM 40Gb s 2Km LC 1271~1331 DFB PIN SM 7~1 < 11. 5 FO QSFP40G LR4 QSFP+ LR4 40Gb s 10Km LC 1271~1331 DFB PIN SM 7~2. 3
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 1266 reviews
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Product Reviews
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Great, affordable upgrade
Style: 36 Sqft 80 mil
Easy to use and install. Great upgrade
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Nice sound deadening, self adhesive mats
Style: 18 Sqft 80 mil
These mats should work fine for my application. I’m applying it to the back sides of the hollow core doors on the closet where my HVAC is installed to reduce the “hum” from passing through. If I were sound deadening my automobile, I would probably use a heavier gage material. Overall, good product at a reasonable price.
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Reviewed in the United States on March 21, 2026
