100 Mpbs Fiber SFP Transceiver WDM-B, Single Mode 20KM / LC / TX:1550nm RX:1310nm, 0ºC~70ºC

100 Mpbs Fiber SFP Transceiver WDM-B, Single Mode 20KM / LC / TX:1550nm RX:1310nm, 0ºC~70ºC

Marsoni

M251S

$34.00

Get it in 3 business days with 1 day shipping. Friday, May 29

100 Mpbs Fiber SFP Transceiver WDM-B, Single Mode 20KM / LC / TX:1550nm RX:1310nm, 0ºC~70ºCThe SFP 100WB20 is a high performance and cost effective module for serial optical data communication applications specified for single mode of 125 Mb s. It operates on +3. 3V power. The module is intended for Single mode fiber, operates at a nominal wavelength of Tx: 1550nm Rx: 1310nm, and complies with the Multi Source Agreement (MSA) Small Form Factor Pluggable (SFP). Each module consists of a bi directional optical subassembly that combines a

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Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.

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Reviewed in the United States on June 11, 2026

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Fletch

Fort Morgan, US

★★★★★ 5

Overall Great.

Size: 10.5 Wide, Color: Black

Great product. Great value. Great style. Overall great.

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Reviewed in the United States on March 3, 2026

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B.J. G

Omaha, US

★★★★★ 3

Decent Shoes with Misleading Description (Not Leather)

Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black

I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.

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Reviewed in the United States on March 28, 2026

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Amazon Customer

Cuba, US

★★★★★ 5

Great Shoes

Size: 10, Color: Cognac

Love these shoes super comfortable and look great. Everyone asks me where I got them.

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Reviewed in the United States on May 20, 2026

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