I've put the breakout cable into use and it worked perfect like pointed out in your web shop. I connected a Dell S4112T with a Dell N1548P and (with a fitting configuration within the switches) the cable worked out of the box as I expected.

Using generic FS AOC 40G QSFP+ to 4x 10G SFP+ cables (quad breakout cables) in various lengths to connect Mikrotik CRS326 Cloud Router Switches to various vendors servers switches and routers. Works great as you would expect with AOC. One thing to note: whether you get link light on 10G ends or not, you need to configure CRS326 breakout ports with autonegotiate off and hard code 10G/full advertisment to actually pass traffic. 10G endpoints should leave autonegotiate on.

Thanks to FS team's great service and fast delivery, our urgent request was fulfilled timely.

In order to achieve the 40-10G connections between the adjacent racks, we planned to buy some optical modules for our data center. Since AOC could provide a more cost-effective solution than normal transceivers + cables solutions, so I decided to pick that. Then I found that FS's 40G QSFP+ to 4x10G SFP+ breakout active optical cable might meet my demands. However, with no shopping experiences from FS before, I consulted with the account manager prudently at the beginning. She helped me to check the compatibility between my equipment and the AOCs that I planned to purchase. Quite impressed by their considerate services. Professional and trustworthy, I assumed. So I rest assured and placed my order immediately. Affordable prices and reasonable shipping postage. Lovely! We tested the cables after receiving the packages and used them for months. No compatibility issues in the long run.

Seldom shopping online for our data center, but a friend of mine gave high recognition of FS. So I thought it worth a try. The account manager was professional enough and patiently solved all my questions. Bought several AOC cables this time. The cables arrived well-packaged and fully intact, worked perfectly with our switches. Will consider ordering again if needed.

Lovely price with excellent quality, checked every parts, no problems!