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. NVIDIA ® Mellanox ® LinkX ® Optics InfiniBand transceivers are the lowest-cost way to create high-speed fourteen data rate (FDR), enhanced data rate (EDR), high data rate (HDR), and HDR100 optical links with detachable optical connectors for InfiniBand networks and NVIDIA GPU-accelerated. 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. NADDOD O112-800G-DR4 adopts an OSFP Flat Top form factor, with 8×100G PAM4 on the electrical side and 4×200G PAM4 on the optical side. It operates at a 1310 nm single-mode wavelength and achieves parallel optical transmission via a single-port MPO/MTP-12 APC interface, supporting single-mode fiber. NVIDIA's 400G and 100G-PAM4 OSFP and QSFP112 optical modules deliver a high-performance, flexible solution for next-generation networking. This guide details the key features, verification process, and optimal use cases for these transceivers in switch applications. Key Features of NVIDIA. The QDD‑400G‑DR4‑S is a high-performance QSFP‑DD transceiver engineered for 400 Gigabit Ethernet over single‑mode fiber (SMF).