The 400G QSFP-DD to 4x 100G QSFP28 breakout active optical cables are designed for use in 400 Gigabit Ethernet links over OM3 multimode fibers, each operating at data rates of up to 53.125Gbps per channel for QSFP- DD by PAM4 modulation and 25.78128Gb/s per channel for QSFP28 with FEC support. This breakout cable is compliant with IEEE 802.3cd, CMIS Rev. 4.0, SFF-8679, SFF-8661, and SFF-8636. Thin and lightweight AOC cables simplify cable management, enabling an efficient system airflow, which is critical in high-density racks. It is used extensively in cloud and supercomputers due to its low cost, high-value proposition, and increased reliability.
Note: The FS P/N is changed from QDD-4Q28AO15 to QDD-400G-4Q4xNAO15, but the product is the same. Only the FS P/N has been changed.