Best in 7 days
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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Description
Fiberso QSFP+ 40G Module SR4 100m 850nm MPO MM 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
4.4 ★★★★★
Based on 223 reviews
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Product Reviews
★★★★★ 5
I will buy these again.
Size: 12-13, Color: Cable Knit Brown
These are great. They’re warm and comfortable.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Great quality!
Size: 10-11, Color: Jacquard Knit Red/Black
Just the best! Comfy! Warm! Great non-slip bottoms! Husbands second pair and will order again!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Best Muclucs I've every owned....GREAT PRICE!
These things are so comfortable and warm. I sleep with them on because I like to have my feet out of the covers. Not too warm...just right. Great quality and fit with a non-slip leather-like sole. I'll keep ordering these ahead of time to make sure I'll always have a fresh pair when I wear them out. I wear them EVERY NIGHT and keep them on all morning. Life-changer! The BEST EVER!!
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Comfy slippers
Size: 10-11, Color: Cable Knit Coffee
Needed these for wood floors cause socks kept wearing out.perfect slipper ..warm and durable
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Great for indoor use.
Size: 10-11, Color: Cable Knit Navy
I bought a pair of these for myself about a year ago and there are plusses and minuses to them. They are comfortable and warm, without getting my feet sweaty or whatever. That's exactly what I wanted. On the minus side, mine ran far too small. I am a 10.5-11 shoe size and the 10-11 is about a half inch too short... my heels are sliding off the back. I am reordering a size 12-13 to try that one. In the take note column, the soles are NOT rubberized in any way. In fact they are like foam, and will absorb water! Also they do not provide cushioning against any kind of rough surface. I think they are perfect for strictly inside the apartment use, but they are not like moccasins or something that allow outdoor use. And I am ordering a 2nd pair after a year so I do like them.
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Reviewed in the United States on November 24, 2025
