NVIDIA, Mellanox Networking LinkX cables and transceiver product line will be showing a full line of 200G/400G network switches, adapters, DAC, AOCs and transceivers at ECOC’20. We offer complete “end-to-end” system networking solutions 1G-to-400G, so customers don’t have to build “Frankenstein” systems piecing everything together and hope it works.
LinkX is a major supplier to hyperscale, HPC, enterprise, telco and now with NVIDIA Artificial Intelligence GPU systems. LinkX designs and manufactures its own DAC, AOC cables, multi- and single-mode transceivers, and transceiver ICs.

http://www.mellanox.com/products/interconnect/