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This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.
This picture is about QSFP-AC10.

10m (33ft) 40G QSFP+ Active Direct Attach Copper Cable for FS Switches


≤1.5W 40mm 26AWG Twinax

22 Sold
92 Reviews
1 Question
6 in U.S. Warehouse, Get it by 25 Jun, 2024
14 in Global Warehouse, Get it by 01 Jul, 2024
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Deliver to New York, 10010
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5-Year Warranty
30-Day Returns
30-Day Exchange

40G QSFP+ DAC Cable (10-meter, Active, QSFP+ to QSFP+, 26AWG)

The 40G QSFP+ Active Direct Attach Copper Twinax Cable is designed for use in 40GBASE Ethernet. It provides a QSFP+ to QSFP+ copper direct-attach solution. This cable is compliant with IEEE 802.3ba Ethernet standard and QSFP MSA Compliant.
With these features, this easy to install, high speed, cost-effective direct attach copper twinax cable is suitable for short-distance connectivity within a rack or between adjacent racks in data centers.

Note:FS Box does not currently support changing H3C and HPE compatibility for DAC cables.

Part Number
Vendor Name
Connector Type
Max Data Rate
Minimum Bend Radius
Wire AWG
Cable Length
10m (32.81ft)
Jacket Material
0 to 70°C (32 to 158°F)
40G InfiniBand 8x DDR, 4x QDR, 10G/40Gigabit Ethernet, Fibre Channel

Quality Testing Program

Take a look at our test program to get the reliable and high-performance optical transceivers.

Quality Testing Program

Optical Transceivers Testing Learn more
Quality Certifications
To get the detailed certification, please go to the Product Compliance Status for download.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Connectivity Solutions
Low Power Consumption for Energy-saving
Direct attach copper is suitable for very short links and offer a cost-effective way to establish a 40-Gigabit link between QSFP+ 40G ports within racks and across adjacent racks.
Lower Power Consumption
Copper Cable
to Save OPEX
40mm Minimum
Bend Radius for Easy Cabling
Enable Seamless Connectivity for Your Network

FS offers the ability to configure the pre-set compatibility of either connector of the DAC cable online with FS BOX to connect Cisco to Arista, Dell to Juniper, and any other mixes of configurations.

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June 11, 2020
We are interested in the 40G DACs, but not sure if they can work with our Cisco devices. The AM quickly replied and asked about our devices’ model, and ensured us the cable could work with my devices. Yeah, they did. This cable does a good job in connecting our switches and adapters. Everything works fine and no problems have occurred so far.
Verified Purchase
Helpful 15
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United Kingdom

May 28, 2020
FS guys are always available to help and answer my questions. Thanks for their recommendation, the QSFP+ cable helps us achieve 40Gbps. Will deal with them again and recommend FS to people I know.
Verified Purchase
Helpful 14
Comment 0


United States

February 20, 2020
We would like to order 7m and 20m DAC cables. 7m was used for connecting the switch and network card in our controlling room, 20m was planned to connect another switch in the downstairs. But FS guys advised us to use 40G module and fibers to achieve 20m connection. He explained the transmission performance would be affected if we chose 20m DAC. We adopted the suggestion. All the DAC, modules and fibers had been used for a while without any problems.
Verified Purchase
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