Broadcom N425G 25GbE OCP 3.0 Adapter

The Broadcom N425G is a quad-port 25GbE OCP 3.0 Small Form Factor Ethernet adapter built on Broadcom's NetXtreme-E BCM57504 ("Thor") controller, configured for data centers that need four independent network links for top-of-rack redundancy, storage fabrics, or multi-tenant traffic separation. Each of the four SFP28 ports runs at up to 25Gbps and auto-negotiates down to 10GbE, connecting to the host over a shared PCIe Gen4 x16 interface using four 28G NRZ SerDes lanes. The N425G implements RoCEv2 RDMA with advanced congestion control on every port, and TruFlow offloads virtual-switch and tunnel processing at line rate across all four links simultaneously. A silicon Root-of-Trust anchors secure boot and attestation, multi-host connectivity lets multiple CPUs share the adapter's ports, and NIC partitioning further subdivides each port into independent physical functions. TruManage completes the platform with standards-based remote manageability suited to dense, multi-link server deployments.