40G QSFP+ to 4xSFP+ Breakout DAC for Cisco QSFP-4SFP10G-CU5M - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP to SFP Cable for Cisco Devices, 5-Meter(16.5ft)

Works great! I have this going into a Ubiquiti 10g SFP+ switch on one end, and a Mellanox card on the other. Gets full speeds and recognized no problem. I bought a bunch of different lengths, all work great.

I used this to connect my Mokerlink 10GbE PoE switch to my router, a Banana Pi BPI-R4 running OpenWRT. Since the orientation of these units are close enough for this short cable (.25M), it was a clean install, but it is a very short cable. If I was to do it over, I'd get the next length up to have a little more flexibility. Installation was easy and the cable fit perfectly and has zero dropped packets. I would definitely buy again.

Worked perfectly for connecting my two switches together, great quality.

These worked great to connect my Mellanox Connect-X 3 to an older Cisco Nexus 9k 40g switch. Both ends detected the QSFP and came up without any issues.

The 10GBASE DAC Cable is an excellent choice for high-speed, short-distance data transmission, offering impressive performance at a cost-effective price. Designed to support 10 Gigabit Ethernet connections, this Direct Attach Copper (DAC) cable provides a reliable and efficient solution for connecting servers, switches, and storage devices within data centers or server rooms. Its robust build ensures minimal signal loss and high reliability, while the passive design helps reduce latency and power consumption compared to optical alternatives. Easy to install and durable, the 10GBASE DAC Cable delivers exceptional bandwidth and low latency, making it a valuable asset for any high-performance networking setup.

Working well. No issues with Mellanox card and Hasivo 10g switch.

I recently upgraded my network infrastructure to support 10GB data transfer speeds. As part of this upgrade, I needed to replace my existing SFP+ cables with new ones that could handle the increased bandwidth. After researching different options, I decided to go with the 10Gtek SFP+ DAC Twinax Cable.I am very happy with this decision. The 10Gtek cable is a high-quality product that is easy to install and use. It has exceeded my expectations in terms of performance and reliability. I have not experienced any dropped packets or errors since installing the cable.In addition to its performance, I am also impressed with the build quality of the 10Gtek cable. The cable is well-made and feels durable. It is also very flexible, which makes it easy to route through tight spaces.Overall, I highly recommend the 10Gtek SFP+ DAC Twinax Cable to anyone who needs a high-performance, reliable cable for their 10GB network.Pros:High-performanceReliableEasy to install and useDurableFlexibleCons:None that I have foundOverall Rating: 5 out of 5 stars

Worked as it should!