Best in 7 days
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Ships within 48 hours · Estimated delivery Oct 3 - Oct 8
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Description
Cisco QDD-400G-FR4-S Compatible 400GBASE-FR4 QSFP-DD 1310nm 2km DOM LC Duplex SMF TransceiverThe Cisco QDD 400G FR4 S Compatible 400GBASE FR4 QSFP DD PAM4 1310nm 2km DOM Duplex is a high performance 400 Gigabit Ethernet module that supports link lengths of up to 2km SMF with duplex LC connector. It is compliant to IEEE 802. 3bs, 400GBASE FR4 Spec of 100G Lambda MSA group, and 400GAUI 8 CEI 56G VSR PAM4 standards. The 400 Gigabit Ethernet signal is carried over four CWDM grid optical wavelengths. Multiplexing and demultiplexing of the four
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 756 reviews
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Product Reviews
★★★★★ 5
Looks great and no need to iron
Color: Light Blue-square, Size: Large
The wrinkle-free dress shirts from COOFANDY are an easy addition to my wardrobe. They are affordable and look nice with colors that pop and a comfortable fit. Plus, I never have to iron!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Nice shirt
Color: Navy Blue-square, Size: X-Large
Great shirt, I got this for a graduation ceremonia, it looking nice and the fabric is fresco and light.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
First class fit and comfort.
Color: Navy Blue-square, Size: Medium
Great fit, comfortable and light. Perfect way to upgrade from tshirts. Also a great price.
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Reviewed in the United States on May 23, 2026
★★★★★ 3
The liner of the shirt can be unsightly with the neck worn open
Color: Black-polka Dots, Size: XX-Large
Be warned, if you get black, the shirt may actually be white inside. I ordered the black with white poka dots. The shirt was nice enough an would have looked okay completely buttoned to the top, however, if you wear the neck open like the model shows in the photos, the shirt is not like that. The shirt has an unsightly white liner which totally shows if you wear the neck unbuttoned at all.
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Reviewed in the United States on July 11, 2025
★★★★★ 5
The shirts run true to size and are very well made.
Color: Wine Red-polka Dots, Size: 3X-Large
I want the company COOFANDY and the customers who are considering buying these men's wrinkle free men's shirts for casual business wear, to know that the shirts are beautiful. The material is perfect, and they are made exceptionally well! One of the two shirts that I bought for my husband looks great on him. I had to buy one in a size 2x and one in a size 3x due to the reviews on Amazon's website, where so many of the reviewers stated that the size that they bought ran too small, while other reviewers said the shirt runs too large. My husband tried on the 2x, and it fit him perfectly, which was great because he always wears a 2x. The reason that I am returning them both is that these shirts are tuck-in shirts, and my husband only wears shirts that do not have to be tucked in, such as straight-bottom shirts. I showed him the picture of the shirt in the ad to prove that the models wore them out, not tucked in, but he said the style is wrong for wearing this shirt on the outside, and that he would not be able to wear it. I am so sorry, but I had to return them as he would not ever wear them. But I wanted you, COOFANDY, and your customers to know that the shirts are well worth the money and are just beautiful!
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Reviewed in the United States on May 21, 2026
