It sends four parallel 100 Gbps optical lanes (1310 nm PAM4) via an MPO‑12 APC connector, delivering reliable transmission up to 500 meters. This hot‑swappable module includes host‑side Forward Error Correction (FEC) and Digital Optical Monitoring (DOM) support for real-time. The QDD‑400G‑DR4‑S is a high-performance QSFP‑DD transceiver engineered for 400 Gigabit Ethernet over single‑mode fiber (SMF). This hot‑swappable module. Compliant with QSFP-DD MSA CMIS Rev5. 0, OIF 56G PAM4 and 100G Lambda MSA FS BOX V4. 0 - Support Real-time Configuration Hot Pluggable QSFP-DD Form Factor Use the Compatibility Tool to verify FS transceiver compatibility with your device and access test reports. The 400GBASE-FR4 module, Duplex LC. The Marvell® PAM4 optical DSP portfolio, including Spica™ and Nova™ DSPs, addresses the critical the need for high-bandwidth optical interconnects to power AI infrastructure. Marvell leads the pluggable module ecosystem with low-power, high-performance silicon for AI, cloud, enterprise and 5G. Amphenol's Rugged 156-Channel 50G/400G PAM-4 Ethernet Switch Box is conduction cooled and configurable for system connectivity, speeds, port types, and interoperation with various high-speed media converters and connectors for system interfacing. Twin-port transceivers can be linked to each other forming an 800Gb/s link and can be linked to two or four. 400 Gigabit Ethernet (400G) transceivers are optical modules capable of handling data rates of 400 Gbps.