HPE 817748-B21 

Ethernet 10/25 Gb Dual-Port 640FLR-SFP28 Network Adapter

The HPE 817748-B21 Ethernet 10/25 Gb Dual-Port 640FLR-SFP28 Network Adapter is a high-speed FlexibleLOM module engineered to elevate networking capabilities in HPEProLiant servers. Supporting both 10 GbE and 25 GbE speeds, it delivers flexibility, high performance, and futureproof connectivity. With twoSFP28ports providing up to 50 Gb/s per port, this adapter is ideal for virtualization, cloud, and high-performance environments that demand both low latency and high throughput.

Features

The 817748-B21 employs PCIe 3.0 x8 FlexibleLOM architecture for broad compatibility across modern HPEserver platforms. Each of its dual SFP28ports supports both 10 GbE and 25 GbE speeds, offering up to 100 Gbps combined bidirectional bandwidth . The adapter supports jumbo frames (up to ~9.2 KB), SNMP remote management, and key features such as VLAN, LACP, LLDP, IPv4/IPv6, QoS, TSO, LSO, RSS, and PXE Advanced offloading technologies—including RDMA over Converged Ethernet (RoCE), VXLAN, NVGRE—minimize CPU overhead and boost performance in overlay and virtualization deployments . Built on Mellanox ConnectX-4 Lx architecture, it ensures efficient processing, low latency, and enterprise-grade reliability 

Advanced Options

Engineered for reliability in demanding server environments, the HPE817748-B21 delivers robust performance and adaptable speed scaling. Its dual-port flexibility allows seamless infrastructure upgrades from 10 GbE to 25 GbE without hardware changes. The built-in offload support (RoCE, VXLAN, NVGRE, TSO, RSS) significantly reduces CPU overhead—boosting overall throughput and efficiency in virtualized and scale-out workloads.