SKU: 88764049102

Cisco QSFP-40G-CSR4 40GB BASE-CSR4 850nm MMF QSFP+ Transceiver

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Description

Cisco QSFP-40G-CSR4 40GB BASE-CSR4 850nm MMF QSFP+ TransceiverThe Cisco QSFP 40G CSR4 is a 40GBASE CSR4 transceiver designed for use with multi mode fiber (MMF) networks. Operating at an 850nm wavelength, this QSFP+ module supports Ethernet connections up to 40 gigabits per second at speeds over distances of up to 400 meters. This hot pluggable and compact form factor solution offers efficient performance in data centers and high density environments. It complies with the IEEE standards for compatibility and

The Cisco QSFP-40G-CSR4 is a 40GBASE-CSR4 transceiver designed for use with multi-mode fiber (MMF) networks. Operating at an 850nm wavelength, this QSFP+ module supports Ethernet connections up to 40 gigabits per second at speeds over distances of up to 400 meters.

This hot-pluggable and compact form factor solution offers efficient performance in data centers and high-density environments. It complies with the IEEE standards for compatibility and interoperability, ensuring seamless integration into existing network infrastructures.

With its four parallel optical channels utilizing multimode fiber technology, the QSFP-40G CSR4 enables reliable connectivity while maximizing bandwidth utilization. This versatile transceiver facilitates cost-effective upgrades from lower-speed interfaces like SFP+ or X2 modules without requiring major infrastructure changes.

Cisco QSFP-40G-CSR4: 40GBASE-CSR4, 4 lanes, 850 nm MMF, connector type MPO-12.

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SKU: 88764049102

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4.3 ★★★★★
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Shawn SnoMan Thompson
Chelsea, US
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
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Reviewed in the United States on January 11, 2026
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Tech Dad
Natrona Heights, US
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential. I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
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Espresso
Port Orchard, US
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024
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Ken Strech
Cuba, US
★★★★★ 5
Recommend
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Great fit, right price
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Reviewed in the United States on March 18, 2026
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Gwen
New York, US
★★★★★ 5
Nice polo
Material Type: Recycled Polyester, Color: Dark Teal, Size: Medium
Fantastic polo shirt. Size was true to fit. Color is amazing. It’s soft and it has held up through washes since Christmas.
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Reviewed in the United States on March 14, 2026

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