HPE 665243-B21
Ethernet 10 Gb 2‑Port 560FLR‑SFP+ FlexibleLOM Network Adapter
The HPE 665243‑B21 is a dual‑port 10 Gigabit Ethernet FlexibleLOM adapter offering two SFP+ optical or DAC copper ports. Powered by the Intel 82599 controller, it connects via PCIe 2.0 ×8 in ProLiant Gen8/Gen9 rack servers. Delivering full line-rate 10 Gbps per port, this compact low‑power card is ideal for virtualization, server uplinks, and high‑throughput workloads. Its FLR design optimizes space and energy efficiency in dense data center deployments.
Features
Designed specifically for HPE ProLiant Gen8–Gen9 rack and scale‑out servers, the 560FLR‑SFP+ provides near 40 Gb/s aggregate bi‑directional bandwidthturn0search12turn0search4turn0search6. It supports both Direct Attach Copper (DAC) and SR/LR SFP+modules via optical cages. Key virtualization features include SR‑IOV, VMware NetQueue, Microsoft VMQ, RSS, MSI‑X, jumbo frames up to 9 KB, TSO/LSO, checksum offloads, VLAN tagging, LACP teaming, PXE boot, and Wake‑on‑LAN. Its design aligns with HPE Sea of Sensors for optimized thermal and power performanceturn0search4turn0search2.
Advanced Options
Built on the Intel 82599 chipset, the 665243‑B21 delivers enterprise-grade network throughput with minimal latency. Its hardware offloads minimize CPU usage in virtualized and storage-heavy environments, while jumbo frames and link aggregation improve
Product Key Features
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Dual 10 GbE SFP+ ports (optical SR/LR or DAC support)
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Intel 82599 controller delivering up to 40 Gb/s aggregate
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FLR form factor, PCIe 2.0 ×8 interface (compatible with ×4)
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Advanced offloads: SR‑IOV, RSS, MSI‑X, TSO/LSO, checksum offloads
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Networking features: VLAN, jumbo frames, LACP, IPv6, PXE, WOL
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SNMP management support and LED indicators
Reliability & Performance
bandwidth efficiency. Thermal and power compliance with HPE Sea of Sensors ensures consistent operation under load. Refurbished units are OEM-tested and typically include a 90‑day warranty; new units may carry longer or lifetime supportturn0search12turn0search2turn0search3.
Key Features :
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2 × 10 GbE SFP+ ports (optical or DAC support)
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Intel 82599 (X520‑DA2) network controller
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FlexibleLOM form factor, PCIe 2.0 ×8 interface
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SR‑IOV, RSS, MSI‑X, jumbo frames, TSO/LSO offloads
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VLAN tagging, NIC teaming, PXE, Wake‑on‑LAN
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SNMP management and port link/activity LEDs included
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