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TP-LINK SM321B WDM SPF Module WDM Bi-Directional SFP Module(LS)
TP-LINK SM321B WDM SPF Module WDM Bi-Directional SFP Module(LS)
TP-LINK SM321B WDM SPF Module WDM Bi-Directional SFP Module(LS)
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TP-LINK SM321B WDM SPF Module WDM Bi-Directional SFP Module(LS)

Marsoni M251S
Sale price$34.99
Pay 4 payments of $8.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
TP-LINK SM321B WDM SPF Module WDM Bi-Directional SFP Module(LS)WDM Bi Directional SFP Module Supports WDM Bi Directional technology, using a single strand of fiber, cost saving
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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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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
4.0 ★★★★★
Based on 1947 reviews
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Product Reviews
S
Verified Purchase
Susan H Garland
Grantham, US
★★★★★ 5
Get this If your hot in bed
Color: Champagne, Size: Queen
Very nice and silky.helps keep me cooler.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
E
Verified Purchase
Emily
Boise, US
★★★★★ 4
Cool not cold
Color: Light Gray, Size: Queen
Super silky like material. Comfy and fits pillow perfectly. Wish it could be a more cold then cool.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
C
Verified Purchase
Cat Flo
Los Angeles, US
★★★★★ 3
It’s ok could be cooler
Color: Light Gray, Size: Queen
Decent — could be cooler. They’re a nice color and texture. It fit my pillows well no annoying zippers it’s nice to sleep on and stay in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
K
Verified Purchase
kenneth e tompor
San Leandro, US
★★★★★ 5
Comfort
Color: Champagne, Size: Queen
What a lifesaver, great feel, and awesome cooling feel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
A
Verified Purchase
Andrew
Lowell, US
★★★★★ 5
Cool bedding
Color: Champagne, Size: Queen
As advertised nice and soft. But most of all cool. It really stays cool, especially on warm nights. A.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026

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