DesignCon 2019: 3m+ QSFP-DD 400G Passive Copper Cable Link

Click video to watch the QSFP-DD DAC demo showcasing a passive copper cable assembly. The channel is running at 56 Gb/s over more than 3 meters of passive copper cable with an acceptable bit error rate (BER). The Quad Small Form Factor Pluggable Double Density, or QSFP-DD, form factor has 8 lanes providing an aggregate throughput of 448 Gbps through a single cable assembly. The QSFP-DD interface is backwards compatible with QSFP, allowing several generations of QSFP modules to be plugged into the same interface.