Works with FS QDD-DR4-400G-Si transceiver module.

Cables came as promised, on time and appear to be quality.

I have received these trunk cables and used them for a while with no issues. They are solid and perform really great. I have no complaint about them. The sales rep gave me very helpful suggestions and helped me connect these cables with the right polarity. Thanks, FS guys. You did a really good job.