What server platforms is the HPE FlexFabric 10Gb 2-port 536FLB Adapter 766489-B21 intended for?

This adapter is categorized as a dual-port 10GbE solution for HPE BladeSystem c-Class Gen9. It belongs to the 10Gb Ethernet FlexibleLOM Adapter family and is positioned specifically for HPE BladeSystem c-Class Gen9 environments, helping ensure compatibility with that blade server generation when planning deployments.

How many network ports does the HPE FlexFabric 10Gb 2-port 536FLB Adapter provide?

As indicated in the model name and category description, the HPE FlexFabric 10Gb 2-port 536FLB Adapter 766489-B21 provides two 10Gb Ethernet ports. This dual-port configuration enables each supported blade server to have two separate 10GbE connections from a single adapter, which can be used for different traffic roles or redundancy strategies.

What networking speed class does the HPE 766489-B21 adapter support?

The adapter is listed in the 10Gb Ethernet FlexibleLOM Adapter category and identified as the FlexFabric 10Gb 2-port 536FLB model. This indicates that each of its two ports operates in the 10Gb Ethernet speed class within supported HPE BladeSystem c-Class Gen9 environments.

What type of product is the HPE FlexFabric 10Gb 2-port 536FLB 766489-B21?

The 766489-B21 is a network adapter, specifically the HPE FlexFabric 10Gb 2-port 536FLB Adapter. It is part of the 10Gb Ethernet FlexibleLOM Adapter category, designed to provide two 10GbE ports for HPE BladeSystem c-Class Gen9 blade servers that use FlexibleLOM-based networking.

How can procurement teams uniquely identify this adapter in catalogs and BOMs?

Procurement and asset management teams can uniquely identify this product by its SKU 766489-B21 and its full name, HPE FlexFabric 10Gb 2-port 536FLB Adapter. Referencing the SKU alongside the description helps avoid confusion with other HPE 10Gb Ethernet FlexibleLOM adapters when building bills of materials for BladeSystem c-Class Gen9 projects.

766489-B21 - HPE 766489-B21 10Gb 2-port FlexFabric network adapter

Name: HPE 766489-B21 10Gb 2-port FlexFabric network adapter
Brand: HPE
SKU: 766489-B21

766489-B21 - HPE 766489-B21 10Gb 2-port FlexFabric network adapter | US IT Hardware

Product overview

The HPE FlexFabric 10Gb 2-port 536FLB Adapter 766489-B21 is a dual-port 10GbE network adapter designed for HPE BladeSystem c-Class Gen9 servers. Belonging to the 10Gb Ethernet FlexibleLOM Adapter family, it provides two 10Gb Ethernet ports to support high-bandwidth blade server networking. As a FlexibleLOM adapter, it integrates with compatible blade infrastructures while allowing standardized deployment across supported platforms. The dual-port 10GbE capability enables separation of traffic types across ports where required by IT policies. Positioned within the HPE FlexFabric product line, this adapter is suitable for environments that have standardized on HPE blade architectures and require 10GbE connectivity within the chassis. The 766489-B21 identifier helps procurement and asset management teams align part ordering and configuration with existing HPE BladeSystem c-Class Gen9 standards.

Dual-port 10Gb Ethernet design for blade servers
Part of the 10Gb Ethernet FlexibleLOM Adapter family
Targeted for HPE BladeSystem c-Class Gen9
HPE FlexFabric 10Gb 2-port 536FLB model branding
Standardized adapter for Gen9 blade environments
SKU 766489-B21 for precise procurement tracking

Expedited and overnight shipping options are available at checkout, priced by destination and service.
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 #	766489-B21
Brand	HPE
Condition	New
Model	536FLB
Bus Type	PCI Express 3.0 x8
Bus Width	8 lanes PCI Express 3.0
Form Factor	FlexibleLOM for HPE BladeSystem c-Class Gen9 servers
QoS Tagging	IEEE 802.1p QoS tagging support
FCoE Support	Fibre Channel over Ethernet (FCoE) protocol support
Product Line	FlexFabric
Product Type	Network adapter

Compatible systems

Adapter is intended for HPE BladeSystem c-Class Gen9 blade servers; OS support not specified for 766489-B21.

HPE BladeSystem
Model: c-Class Gen9
Form factor: Blade server
Generation: Gen9
Retailer description states 766489-B21 is designed for use in HPE BladeSystem c-Class Gen9 servers.

Best for

BladeSystem c-Class Gen9 deployments
Suited for HPE BladeSystem c-Class Gen9 environments that require standardized 10Gb Ethernet connectivity using the HPE FlexFabric 10Gb 2-port 536FLB Adapter 766489-B21.
Dual-port 10GbE blade networking
Appropriate for blade servers needing two 10Gb Ethernet ports from a single adapter, enabling separate paths for different traffic types within the chassis.
FlexibleLOM-based infrastructure
Designed for infrastructures that use 10Gb Ethernet FlexibleLOM adapters, allowing consistent deployment of the HPE FlexFabric 10Gb 2-port 536FLB in compatible Gen9 blade systems.

Frequently asked questions

Details

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PXE Boot Support	Preboot eXecution Environment (PXE) boot support

Interrupt Handling	Extended Message-Signaled Interrupts (MSI-X) and adaptive interrupt coalescing

iSCSI Acceleration	Hardware accelerated iSCSI including iSCSI boot

Jumbo Frame Support	Jumbo frames support

Onboard Memory Size	900 MB distributed memory

FlexNIC Partitioning	Each 10 GbE port can be partitioned into up to 4 physical NIC functions

Offload Technologies	TCP Segmentation Offload (TSO), Large Send Offload (LSO), TCP/IP and UDP/IP checksum offload

Teaming And Failover	NIC teaming and bonding for load balancing and failover

Connection Technology	Optical fiber

Supported Link Speeds	1 Gb and 10 Gb Ethernet link speeds supported

Blade Connectivity Type	FlexibleLOM connection to BladeSystem midplane with 1 x FlexibleLOM slot

Power Reduction Feature	Single-chip 10 GbE design on FlexibleLOM to reduce power requirements versus previous generations

Virtualization Features	Single Root I/O Virtualization (SR-IOV) support

Supported Server Platform	Designed for HPE BladeSystem c-Class Gen9 server blades

Auto-Negotiation Capabilities	Auto-negotiation between 1000 Mbps and 10000 Mbps depending on interconnect

Compatibility (Server Family)	HPE BladeSystem c-Class Gen9 servers

BladeSystem Enclosure Connectivity	Connects to 10 Gb interconnects in bays 1-2 of HPE BladeSystem c7000 or bay 1 of c3000 enclosures

Virtual Connect FlexFabric Support	Supports HPE Virtual Connect FlexFabric interconnect modules with FlexNIC partitioning

Supported Data Link Protocols (extended)	10 Gigabit Ethernet, FCoE, iSCSI

Performance

Aggregate Full Duplex Bandwidth	40 Gbps aggregate full duplex theoretical bandwidth
Aggregate Bi-directional Bandwidth	40 Gb/s aggregate bi-directional theoretical bandwidth
Full Duplex Transfer Rate Per Port	20 Gbps full duplex per port

Typical Power Consumption	Approximately 7 W typical power usage for two 10 GbE ports

Networking Ports & Interfaces

Ports Count	2 ports
Host Interface	PCI Express 3.0 x8
Interface Type	PCI Express 3.0 x8
Network Processor	QLogic 57840S with integrated MAC/PHY
Data Link Protocol	10 Gigabit Ethernet
IEEE LAN Standards	IEEE 802.3, 802.3x, 802.3ad (LACP), 802.3ae, 802.3ap, 802.1Q, 802.1p, 802.1ab, 802.1Qau
Total Ethernet Ports	2 x 10Gb Ethernet ports
Network Speed per Port	10 Gb/s
Remote Management Protocol Support	SNMP remote management protocol support
Supported Network Interface Standards	10GBASE-SR, 10GBASE-LR, 10GBASE-CR, SFP+ Direct Attach Copper
Supported Network Transport Protocols	TCP/IP
Supported Remote Management Protocols	SNMP

HPE 766489-B21 10Gb 2-port FlexFabric network adapter