HPE P24838-B21

642SFP28 Dual‑Port 25 Gb/10 Gb Ethernet FlexibleLOM Adapter

The HPE P24838‑B21 is a high-speed network adapter featuring two SFP28 ports capable of 25 GbE native speeds (also supporting fallback to 10 GbE). Designed for FlexibleLOM integration on HPE ProLiant Gen9/Gen10 servers, it enables aggregate throughput of up to 50 Gbps over a single PCIe 3.0 ×8 connection. Ideal for virtualization, hyper-converged infrastructure, and cloud-native workloads, the adapter supports advanced offloads such as SR‑IOV, RoCE, and VXLAN tunnel acceleration with low latency and minimal CPU overhead

Features

Built on Mellanox ConnectX‑4 Lx silicon, this adapter offers full offload support for modern networking requirements. Its two SFP28 ports support both 25 Gb and 10 Gb speeds, auto-negotiating as needed. Features include RoCE v2 for RDMA, SR‑IOV virtualization support, VLAN tagging, LACP, jumbo frames (up to ~9KB), and tunnel offloading (VXLAN/NVGRE). With low power consumption (~10 W typical) and thermal-efficient design, it fits seamlessly in server FlexibleLOM slots without compromising airflow or expansion. Certified on HPE ProLiant Gen9/Gen10 platforms, it ensures reliable driver support across Linux, VMware, and Windows environments

Advanced Options

Engineered for modern enterprise workloads, this adapter delivers predictable high-bandwidth throughput with sub‑microsecond latency. The Mellanox-based hardware offloads boost performance in virtualized environments, reducing CPU load for network-intensive operations like VM migration or remote storage access. FlexibleLOM placement preserves PCIe real estate and maintains chassis airflow.