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Description
40G-QSFP-ESR4 Brocade® Compatible Transceiver QSFP+ 40GBase-CSR4 (850nm, MMF, 400m, MPO, DOM)40G QSFP ESR4 Brocade Compatible Transceiver QSFP+ 40GBase CSR4 (850nm, MMF, 400m, MPO, DOM) ATGBICS Brocade compatible 40G QSFP ESR4 QSFP+ 40GBase CSR4 form factor network transceiver supports a distance of up to 400m over multi mode fibre (MMF) using a wavelength of 850nm via an MPO 12 connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present enabling real time monitoring of the
40G-QSFP-ESR4 Brocade® Compatible Transceiver QSFP+ 40GBase-CSR4 (850nm, MMF, 400m, MPO, DOM)
ATGBICS Brocade® compatible 40G-QSFP-ESR4 QSFP+ 40GBase-CSR4 form factor network transceiver supports a distance of up to 400m over multi-mode fibre (MMF) using a wavelength of 850nm via an MPO-12 connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present enabling real-time monitoring of the parameters of the fibre optic transceiver.
Our product meets the specification of Brocade® 40G-QSFP-ESR4 and we proudly offer a compatibility guarantee and limited lifetime warranty. Our rigorously tested products record a unique traceable serial number and are fully compliant with all MSA (Multi-Source Agreement) and IEEE standards & protocols.
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
4.4 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Very nice look
Size: 13 Wide, Color: Brown
Very nice look, sole is comfortable, inside upper leather is a bit stiff. Not enough to hurt but not soft. I would purchase another color.
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Reviewed in the United States on May 28, 2026
★★★★★ 3
Nice shoes but no half sizes.
Size: 11, Color: Brown
I had to return the shoes because they do not have half sizes. Other shoes i always wear an 11. That was tight with these and 12 would be to big.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Great shoes
Size: 9.5 Wide, Color: Black/City Skyline/Egret
Great-looking casual shoes that are very comfortable to wear. Perfect for evening outings and long periods on your feet. Stylish, well-made, and comfortable from day one. Highly recommended!
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Perfect casual Friday shoe with great comfort and style
Size: 10, Color: Optic White/Egret
These have quickly become my go-to shoes for casual Fridays at work. The fit is true to size, and they’re both comfortable and stylish without trying too hard. They pair really well with jeans or khakis, so they’re easy to dress up or down depending on the day.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great shoe
Size: 8, Color: British Tan
My teen loves these shoes. They have a nice contemporary styling and he says they are comfortable. Recommend.
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Reviewed in the United States on May 17, 2026