The 400G DAC features a 400G QSFP-DD with two 200G QSFP56 connectors and one passive copper cable, providing 400G data rates. 400G QSFP-DD DAC is a cost-effective alternative solution to 400G fiber optic products, quite suitable for short-range 400G Ethernet applications. QSFPTEK's 400G DAC is fully compliant to QSFP-DD Multi-Source Agreement (MSA). Our 400G QSFP-DD cables enable high speed and reduced power requirements for data centers at a cost-effective price. Rigorous cable testing requirement ensures cables with high performance and superior durability.