Brand: HPE | Category: Network Adapters & NICs
SKU: HPE-817749-B21 | Part #: 817749-B21 | MPN: 817749-B21
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The HPE 817749-B21 delivers dual-port 10/25GbE connectivity in a flexible, space-efficient form factor designed for next-generation data center deployments. This HPE Ethernet adapter combines high-speed port density with enterprise-class reliability, making it an ideal choice for network engineers and infrastructure architects seeking to modernize their server connectivity without sacrificing performance or compatibility.
Built on the Cavium FastLinQ QL41262 network controller, the 817749-B21 operates via PCIe 3.0 x8 through HPE's FlexibleLOM slot architecture, enabling seamless integration into HPE ProLiant Gen9 and Gen10 servers. The adapter supports auto-negotiated speeds of 10GbE and 25GbE per port, with comprehensive offload capabilities including TCP/UDP/IP checksum offload, Large Send Offload (LSO), and Large Receive Offload (LRO). It delivers advanced features such as SR-IOV support for virtual machine scalability, RoCE (RDMA over Converged Ethernet) for low-latency applications, and Data Center Bridging (DCB) with Priority Flow Control (PFC) and Enhanced Transmission Selection (ETS) for QoS-critical environments. The adapter also supports FCoE and iSCSI, providing flexibility for both block and file storage protocols. Compatible with SFP28 DAC, active optical cable (AOC), and optical transceivers, the 817749-B21 adapts to diverse cabling strategies across modern data centers. Full support for Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and VMware vSphere ESXi ensures broad operating system compatibility. HPE iLO integration delivers single-pane management of both server and adapter resources, while firmware updates are streamlined through HPE Smart Update Manager (SUM) and Service Pack for ProLiant (SPP).
For enterprise procurement, contact Omnixon Global to request an RFQ for the HPE 817749-B21 network adapter.
| Brand | HPE |
| Category | Network Adapters & NICs |
| SKU | HPE-817749-B21 |
| Part Number | 817749-B21 |
| Condition | New |
| Capacity | 25GB |
| Form Factor | FlexibleLOM |
| Interface | Ethernet 10/25 Gb |
| Speed | 10/25 Gb/s per port |
| Manufacturer Part Number | 817749-B21 |
| Product Name | HPE Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter |
| Form Factor | FlexibleLOM (FLR) |
| Number of Ports | 2 |
| Port Speed | 10GbE / 25GbE per port (auto-negotiated) |
| Transceiver Interface | SFP28 |
| Network Controller | Cavium FastLinQ QL41262 |
| Host Interface | PCIe 3.0 x8 (via FlexibleLOM slot) |
| SR-IOV Support | Yes |
| RDMA Technology | RoCE (RDMA over Converged Ethernet) |
| Data Center Bridging (DCB) | Yes — supports Priority Flow Control (PFC) and Enhanced Transmission Selection (ETS) |
| Offload Engines | TCP/UDP/IP checksum offload, Large Send Offload (LSO), Large Receive Offload (LRO) |
| FCoE Support | Yes |
| iSCSI Support | Yes |
| Operating System Support | Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware vSphere ESXi |
| Server Compatibility | HPE ProLiant Gen9 and Gen10 servers with FlexibleLOM slot |
| Firmware Management | HPE Smart Update Manager (SUM), Service Pack for ProLiant (SPP) |
| HPE iLO Integration | Yes — single-pane server and adapter management |
| Cable Compatibility | SFP28 DAC (direct-attach copper), SFP28 AOC (active optical cable), SFP28 optical transceivers |
The HPE 817749-B21 - HPE Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
Key specifications for the HPE 817749-B21 - HPE Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter: form factor FlexibleLOM; interface Ethernet 10/25 Gb; 1 year manufacturer support; new condition. Manufacturer part number 817749-B21. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
The HPE 817749-B21 - HPE Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.