Axiom Memory PAN-QSFPDD-400GBASE-FR4-A 400 GbE FR4 QSFP-DD Optical Transceiver

Move 400 GbE traffic across campus, data-center, and inter-building fiber runs without requiring parallel-fiber optics. The Axiom Memory PAN-QSFPDD-400GBASE-FR4-A is a QSFP-DD 400GBASE-FR4 optical transceiver specified for reaches up to 2 km over single-mode fiber. Its FR4 optical interface multiplexes four optical wavelengths onto a duplex fiber path, supporting high-density 400 GbE links with a two-fiber cabling approach. Install the module in a compatible QSFP-DD port on a Palo Alto network platform, then connect duplex single-mode fiber terminated for the module's LC optical interface. This makes the optic relevant for 400 GbE uplinks, aggregation links, and backbone connections where the link budget requires more reach than short-reach multimode optics provide. QSFP-DD host connectivity also supports the physical density expected in high-bandwidth chassis and fixed-form-factor equipment. The defining characteristics of this version are its 400GBASE-FR4 signaling, 2 km optical reach, single-mode fiber operation, and Palo Alto compatibility. FR4 distinguishes it as a wavelength-multiplexed duplex-fiber solution rather than a parallel-fiber transceiver, reducing the number of fiber strands required for a 400 GbE path. Match the host port form factor, intended Ethernet standard, installed fiber type, connectorization, and required link distance before deployment.