How many network ports does the HPE Ethernet 10Gb 2-port 560FLR-SFP+ 665242-B21 provide?

: "The model name explicitly identifies this product as a 2-port adapter. This means the HPE Ethernet 10Gb 2-port 560FLR-SFP+ 665242-B21 provides two Ethernet ports on a single adapter, which is important for planning interface counts, redundancy options, and overall 10Gb port density per server.

How can this adapter be uniquely identified in procurement systems?

This adapter can be uniquely identified using its SKU 665242-B21 alongside its full model name, HPE Ethernet 10Gb 2-port 560FLR-SFP+ Adapter. Using both the SKU and model name helps procurement and asset management teams avoid confusion with other HPE adapters and ensures consistent cataloging.

To which adapter family does the 665242-B21 belong?

The 665242-B21 belongs to the HPE Ethernet 10Gb 2-port 560FLR-SFP+ family, as indicated in the model name. The 560FLR-SFP+ designation associates it with a specific HPE adapter line, which is useful when standardizing on a particular family across multiple servers and configurations.

Why is the 2-port design of the 560FLR-SFP+ adapter significant for planning?

The 2-port description in the Ethernet 10Gb 2-port 560FLR-SFP+ model name indicates that each HPE 665242-B21 adapter delivers two Ethernet connections. This is significant for capacity planning, because it allows designers to determine how many adapters are required to meet a given count of 10Gb Ethernet ports per server.

665242-B21 - HPE 665242-B21 Ethernet 10Gb 2-port 560FLR-SFP+ Adapter

Name: HPE 665242-B21 Ethernet 10Gb 2-port 560FLR-SFP+ Adapter
Brand: HPE
SKU: 665242-B21

665242-B21 - HPE 665242-B21 Ethernet 10Gb 2-port 560FLR-SFP+ Adapter | US IT Hardware

Product overview

The HPE Ethernet 10Gb 2-port 560FLR-SFP+ Adapter 665242-B21 is designed for environments standardizing on 10Gb Ethernet. As part of the 560FLR-SFP+ family, this adapter provides dual-port connectivity for deployments that require multiple 10Gb Ethernet interfaces. The model designation clearly identifies it as a 2-port 10Gb Ethernet adapter, allowing IT teams to align it with existing 10Gb infrastructure planning. The SFP+ interface family enables use within 10Gb Ethernet networks where this adapter type is specified. With its HPE branding and defined SKU, the 665242-B21 can be accurately cataloged and referenced in procurement systems and hardware inventories. This adapter fits into the network adapter category for 10Gb Ethernet PCIe solutions using the 2-port 560FLR-SFP+ platform, making it suitable for standardized data center configurations that call for this specific HPE Ethernet 10Gb 2-port 560FLR-SFP+ model.

HPE-branded Ethernet 10Gb 2-port 560FLR-SFP+ adapter
Supports 10Gb Ethernet network deployments
Dual-port configuration for two Ethernet connections
Identified by SKU 665242-B21 for easy procurement
Belongs to the HPE 560FLR-SFP+ adapter family
Suitable for standardized 10Gb adapter fleets

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Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	665242-B21
Brand	HPE
Condition	New
Model	Ethernet 10Gb 2-port 560FLR-SFP+
Bus Type	PCI Express 2.0 x8
Form Factor	FlexibleLOM (FLR) plug-in card
Flow Control	IEEE 802.3x full-duplex flow control
LLDP Support	IEEE 802.1ab Link Layer Discovery Protocol
Product Line	HPE Ethernet 10Gb 2-port 560FLR-SFP+ Adapter
Product Type	Network adapter
VLAN Support	IEEE 802.1Q VLAN tagging supported

Best for

10Gb Ethernet networks
Suitable for environments that have standardized on 10Gb Ethernet, using the HPE Ethernet 10Gb 2-port 560FLR-SFP+ platform identified by SKU 665242-B21.
Dual-port 10Gb connectivity
Appropriate for deployments that require two 10Gb Ethernet ports on a single adapter, as indicated by the Ethernet 10Gb 2-port 560FLR-SFP+ designation.
Standardized 560FLR-SFP+ adapter fleets
Useful for data centers standardizing on the HPE 560FLR-SFP+ adapter family, where the exact model and SKU 665242-B21 must be consistently maintained.
HPE-specific infrastructure
Fits scenarios where HPE-branded Ethernet 10Gb 2-port 560FLR-SFP+ adapters are specified in design documents, using the 665242-B21 identifier for procurement and tracking.
Cataloged network hardware
Well suited for organizations that require precise part tracking, leveraging the clear HPE model name and SKU 665242-B21 for inventory and asset management.

Frequently asked questions

What is the Ethernet speed class of the HPE 665242-B21 adapter?

Details

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PCI Device ID	DID 10fb

PCI Vendor ID	VID 8086

Status Indicators	Port status, link activity LEDs

Compatible Slot Type	1 x FlexibleLOM slot

Power Characteristics	Low-power dual-port 10GbE FlexibleLOM adapter designed to reduce overall server power consumption compared to previous-generation 10GbE NICs

Connectivity Technology	Wired

PCI Subsystem Vendor ID	SVID 103c

Link Aggregation Support	IEEE 802.3ad Link Aggregation Control Protocol (LACP)

Supported Operating Systems	Microsoft Windows Server 2008 (32/64-bit), Windows Server 2008 R2 (32/64-bit), Windows Server 2012 (32/64-bit), Microsoft Windows HPC Server 2008, Red Hat Enterprise Linux 5.x, Red Hat Enterprise Linux 6, SuSE Linux Enterprise Server 10, SuSE Linux Enterprise Server 11, SunSoft Solaris 10, VMware ESX, VMware ESXi 4.1, VMware ESXi 5

Advanced Networking Features	Wake on LAN (WOL), Jumbo Frames support, teaming support, PXE boot support, Large Send Offload (LSO), Receive Side Scaling (RSS), TCP Segmentation Offload (TSO)

Layer 2 Priority / QoS Support	IEEE 802.1p traffic prioritization

Congestion Notification Support	IEEE 802.1Qau Congestion Notification

Supported Cabling / Transceiver Type	SFP+ 10GbE optical or Direct Attach Copper (DAC) cables via SFP+ slots

Performance

Data Transfer Rate	10 Gigabit per second
Aggregate Bi-directional Throughput	40 Gb/s per adapter (two 20 Gb/s bi-directional ports)
Theoretical Bandwidth Per Port (Bi-directional)	20 Gb/s bi-directional per port
Theoretical Bandwidth (Aggregate Bi-directional)	40 Gb/s aggregate bi-directional theoretical bandwidth

Networking Ports & Interfaces

Ports	2 x SFP+
Interface	PCI Express 2.0 x8
Network Processor	Intel 82599 controller
Data Link Protocol	10 Gigabit Ethernet (10 GigE)
Ethernet Technology	10 Gigabit Ethernet
Remote Management Protocols	SNMP
10 Gigabit Ethernet Standard	IEEE 802.3ae 10 Gigabit Ethernet