HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter
Brand: HPE | Category: Network Adapters & NICs
SKU: HPE-665249-B21 | Part #: 665249-B21 | MPN: 665249-B21
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About the HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter
The HPE Ethernet 10Gb 2-port 560SFP+ Adapter operates over a PCIe 2.0 x8 bus interface, delivering high-speed connectivity for enterprise server environments. Built on the Intel 82599ES controller, this genuine HPE Option (part number 665249-B21) pairs dual SFP+ ports, each rated at 10 Gbps data transfer, with intelligent offload capabilities including TCP Segmentation Offload (TSO), Large Receive Offload (LRO), TCP/UDP/IP Checksum Offload, VLAN tag insertion and stripping, and Receive Side Scaling (RSS). The adapter supports both SFP+ optical modules and Direct-Attach Copper (DAC) cables, while its low-profile half-height form factor—shipped with a full-height bracket—ensures compatibility across diverse server chassis designs. HPE engineers designed this card to handle Ethernet, iSCSI, and FCoE protocols, backed by IEEE 802.3ae, IEEE 802.1Q, and IEEE 802.3ad standards compliance for robust 10GBASE-SR/LR connectivity and link aggregation.
Enterprise storage architects, data center network engineers, and IT infrastructure teams deploy the 665249-B21 in HPE ProLiant DL, ML, and BL Gen8 series servers when virtualization density and throughput become mission-critical. SR-IOV (Single Root I/O Virtualization) support empowers virtual environments to isolate network I/O and reduce hypervisor overhead, while IEEE 802.3x flow control prevents packet loss during sustained, high-bandwidth workloads. HPE management integration—via iLO, Smart Update Manager (SUM), and Service Pack for ProLiant (SPP)—streamlines firmware updates and monitoring across Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and VMware ESXi deployments.
Organizations seeking validated 10 Gigabit Ethernet expansion for tier-1 server infrastructure should evaluate the HPE 665249-B21 alongside existing fabric requirements. Omnixon Global carries this component as part of our comprehensive HPE hardware portfolio. To request a quotation or discuss your connectivity roadmap, contact our enterprise solutions team through our RFQ portal.
Technical Specifications
| Brand | HPE |
| Category | Network Adapters & NICs |
| SKU | HPE-665249-B21 |
| Part Number | 665249-B21 |
| Condition | New |
| Capacity | 10GB |
| Form Factor | PCIe |
| Interface | Ethernet 10 Gb |
| Speed | 10 Gb/s per port |
| Manufacturer Part Number | 665249-B21 |
| Product Name | HPE Ethernet 10Gb 2-port 560SFP+ Adapter |
| Controller | Intel 82599ES |
| Number of Ports | 2 |
| Port Type | SFP+ |
| Data Transfer Rate per Port | 10 Gbps |
| Bus Interface | PCIe 2.0 x8 |
| Form Factor | Low-profile (half-height) with full-height bracket included |
| Supported Protocols | Ethernet, iSCSI, FCoE |
| Offload Capabilities | TCP Segmentation Offload (TSO), Large Receive Offload (LRO), Checksum Offload (TCP/UDP/IP), VLAN tag insertion/stripping, Receive Side Scaling (RSS) |
| Virtualization Support | SR-IOV (Single Root I/O Virtualization) |
| Cable Support | SFP+ optical modules, Direct-Attach Copper (DAC) cables |
| Operating System Support | Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi |
| Management Integration | HPE iLO, HPE Smart Update Manager (SUM), HPE Service Pack for ProLiant (SPP) |
| Compatible Server Families | HPE ProLiant DL, ML, and BL Gen8 series servers |
| Product Type | Genuine HPE Option |
| Flow Control | IEEE 802.3x |
| Standards Compliance | IEEE 802.3ae (10GBASE-SR/LR), IEEE 802.1Q (VLAN), IEEE 802.3ad (Link Aggregation) |
Frequently Asked Questions about HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter
What does the HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter do?
The HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ 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.
What are the headline specs of the HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter?
Key specifications for the HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter: form factor PCIe; interface Ethernet 10 Gb; 1 year manufacturer support; new condition. Manufacturer part number 665249-B21. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ Adapter compatible with my infrastructure?
The HPE 665249-B21 - HPE Ethernet 10Gb 2-port 560SFP+ 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.