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Description
DAC-Q28-4SFP28-25G-2.5M Dell® Compatible Direct Attach Copper Breakout Cable 100GBase-CU QSFP28 to 4x25GBase-CU SFP28 (Passive Twinax, 2.5m)DAC Q28 4SFP28 25G 2. 5M Dell Compatible Direct Attach Copper Breakout Cable 100GBase CU QSFP28 to 4x25GBase CU SFP28 (Passive Twinax, 2. 5m) ATGBICS Dell Compatible DAC Q28 4SFP28 25G 2. 5M 100GBase CU QSFP28 to 4 SFP28 Passive Direct Attach Cable operates over Passive Copper with a cable length of 2. 5m. This product operates within a commercial temperature range. It is suitable for short reach connection between 100G QSFP28 and 25G SFP28 enabled
DAC-Q28-4SFP28-25G-2.5M Dell® Compatible Direct Attach Copper Breakout Cable 100GBase-CU QSFP28 to 4x25GBase-CU SFP28 (Passive Twinax, 2.5m)
ATGBICS Dell® Compatible DAC-Q28-4SFP28-25G-2.5M 100GBase-CU QSFP28 to 4 SFP28 Passive Direct Attach Cable operates over Passive Copper with a cable length of 2.5m. This product operates within a commercial temperature range. It is suitable for short reach connection between 100G QSFP28 and 25G SFP28 enabled host adapters, switches, and servers in 100G interconnecting networking applications and provides a cost-efficient way to connect hardware within close proximity racks. This breakout cable connects to 1 x 100G QSFP28 port on one end and to 4 x 25G SFP28 ports on the other end.
Our product meets the specification of Dell®DAC-Q28-4SFP28-25G-2.5M 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]
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4.2 ★★★★★
Based on 64 reviews
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Product Reviews
★★★★★ 5
Good stuff !
Model: 36 SqFt(3.4 SqM), Model: 36 SqFt(3.4 SqM)
This is an excellent product. Easily moldable, cuttable with good scissors or razor knife, very sticky, works great.
This pack was enough to do all 4 doors on a crew max truck, and I went wild on the fronts. I used 9 peices on each rear door which was just enough, and the rest on the fronts. I doubled up layers and even used some on the back of the door panels. If you follow the instructions and dont go wild you might even have extra left over.
It works just like you would imagine. Without doing the entire cab there will still be road noise but this helped noise, better audio, no buzzing door panels, terrific improvement.
It is kind of heavy, so extra weight is added to truck, but that really isnt a bad thing. It is noticable but in a good way.
Get it. Use it.
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Reviewed in the United States on March 20, 2026
★★★★★ 4
Good product
Model: 36 SqFt(3.4 SqM)
Easy to roll out. Works great
Why did you pick this product vs others?:
Fair price for the amount of coverage, good quality
Works well:
Easy to install, rolls out great. Forms to contours well
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Reviewed in the United States on July 13, 2025
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
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Reviewed in the United States on December 29, 2025