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Gregory Allen
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4-port adapter handled traffic efficiently.
764303-B21
HPE Flexfbrc 10Gb 4P 536FLR-T FIO Adptr
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764303-B21
- Description:
- HPE Flexfbrc 10Gb 4P 536FLR-T FIO Adptr
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- Warranty:
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- List Price:
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764303-B21 Overview
Overview of 764303-B21
764303-B21 is a high-performance Ethernet network adapter engineered for data centers and demanding enterprise environments. It delivers a robust data rate of 10Gbps via a PCIe connection interface while supporting key network protocols such as TCP/IP and UDP. Designed as an internal PCIe card, it aligns with advanced networking needs without compromising on speed or reliability.
This network adapter is fully compatible with major operating systems including Windows, Linux, and macOS, making it an ideal choice for small office networks, high-speed workstations, and gaming setups. With built-in support for features like auto-negotiation, Wake-on-LAN, jumbo frames, and QoS, 764303-B21 ensures seamless performance and efficient network communications in high-demand scenarios.
764303-B21 price is $517.52, a 16% saving from the Hpe list price of $616.09. 764303-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 764303-B21 for additional pricing. Browse the full Hpe Network Adapters series or explore all Hpe products.
764303-B21 Specifications
- Product Type
- Network Adapter
- Adapter Type
- Ethernet
- Data Rate
- 10Gbps
- Connection Interface
- PCIe
- Supported Protocols
- TCP/IP, UDP
- Form Factor
- Internal PCIe Card
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Windows, Linux, macOS
- Max Speed
- 10Gbps
- Supported Features
- Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
- Power Consumption
- 12W
- Connector Type
- RJ-45
- Maximum Range
- 100 meters
- Bus Type
- PCIe x4
- Product Name
- 764303-B21 10Gbps Ethernet Network Adapter
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
764303-B21 Use Case
Accelerated Virtual Desktop Infrastructure (VDI) Deployments
In a financial services firm running HPE ProLiant servers, the 764303-B21 HPE FlexFabric 10Gb 4P 536FLR-T FIO Adapter delivers four 10 GbE ports directly into VMware ESXi hosts. By offloading network processing and providing low-latency, high-throughput connectivity, administrators support 500+ concurrent virtual desktops with 35% faster login times and a 20% reduction in bandwidth bottlenecks. Outcome: Superior end-user experience, streamlined VDI scale-out and measurable OPEX savings.
High-Speed SAN Replication for Disaster Recovery
A global retailer leverages the 764303-B21 adapter in HPE ProLiant DL380 servers as multipath interfaces for synchronous SAN replication between primary and remote data centers. With 40 Gbps aggregate bandwidth and advanced offload features, the solution sustains sub-5 ms latency during peak hours and achieves an RPO under 10 minutes. Outcome: Business continuity assurance, minimized data-loss risk and compliance with stringent RTO/RPO SLAs.
Scalable AI/ML Compute Clusters
A research institution integrates the HPE FlexFabric 536FLR-T FIO Adapter into its HPE Apollo cluster to interconnect GPU and CPU nodes over 10 GbE. The adapter’s FlexibleLOM design and hardware offloads streamline high-speed data exchange for distributed training of deep-learning models. Outcome: 25% faster training convergence, improved resource utilization and lower time-to-insight for AI workloads.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 764303-B21 |  817710-B21 |  718904-B21 |  789006-B21 |  732456-B21 | |
|---|---|---|---|---|---|
| Product Type | Network Adapter | Network Adapter | Network Adapter | Network Adapter | Network Adapter |
| Adapter Type | Ethernet | USB-to-Ethernet | Ethernet | Ethernet | Ethernet |
| Data Rate | 10Gbps | 10Gbps | 1Gbps | 10Gbps | 10Gbps |
| Connection Interface | PCIe | USB 3.0 | PCIe | PCIe | PCIe |
| Supported Protocols | TCP/IP, UDP | TCP/IP / UDP / NFS | TCP/IP, UDP | TCP/IP / UDP | TCP/IP, UDP, iSCSI, NFS |
| Form Factor | Internal PCIe Card | External USB Device | Internal PCIe Card | Internal PCIe Card | Internal PCIe Card |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 5V | 3.3V | 3.3V | 3.3V |
| Compatibility | Windows, Linux, macOS | Windows / Linux / macOS | Windows, Linux, macOS | Windows / Linux / macOS | Windows, Linux, macOS |
| Max Speed | 10Gbps | 10Gbps | 1Gbps | 10Gbps | 10Gbps |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Power Consumption | 12W | 5W | 3.5W | 6W | N/A |
| Connector Type | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| Maximum Range | 100 meters | 100 meters | 100 meters | 100 meters | N/A |
| Bus Type | PCIe x4 | USB 3.0 | PCIe x1 | PCIe x4 | PCIe x4 |
| Product Name | 764303-B21 10Gbps Ethernet Network Adapter | 817710-B21 USB-to-Ethernet Adapter | 718904-B21 Gigabit Ethernet Adapter | 789006-B21 Ethernet Adapter | 732456-B21 High Performance Ethernet Adapter |
| Height | N/A | 0.5 inches | 0.4 inches | N/A | N/A |
| Width | N/A | 2.0 inches | 4.3 inches | N/A | N/A |
| Depth | N/A | 1.5 inches | 1.5 inches | N/A | N/A |
| Weight | N/A | 0.2 lbs | 0.2 lbs | N/A | N/A |
Reviews & Ratings
T
Taimoor Khan
5
OEM FlexFabric NIC installed easily.
H
Hannes Wolf
4
Consistent multi-port performance.
R
Robert Shaw
4
Good blade networking option.
A
Andre Costa
4
Reliable enterprise adapter.
Questions & Answers
What is the HPE FlexFabric 10Gb 4-port 536FLR-T FIO Adapter (SKU: 764303-B21)?
The HPE FlexFabric 536FLR-T (764303-B21) is a FlexibleLOM quad-port 10GbE converged network adapter for ProLiant Gen8/Gen9 servers, delivering high-throughput Ethernet, FCoE and iSCSI connectivity.
Which HPE ProLiant servers are compatible with the 764303-B21 adapter?
The 764303-B21 supports HPE ProLiant Gen8 and Gen9 servers with FlexibleLOM slots, including DL360, DL380, DL560 and BL460 blade models.
What key features does the HPE FlexFabric 536FLR-T offer?
Key features include four 10GbE SFP+ ports, Flex-Virtualization with SR-IOV, FCoE/iSCSI offloads, PCIe 3.0 support, and HPE OneView integration for unified management.
How does the FlexibleLOM form factor benefit deployment?
FlexibleLOM enables independent network adapter upgrades without replacing the server motherboard, reducing downtime and improving lifecycle flexibility.
What cabling options are supported by this adapter?
The adapter uses SFP+ cages supporting DAC cables, active optical cables (AOC) and 10GbE SR/LR transceivers for copper and fiber connectivity.
Does the 764303-B21 support FCoE and iSCSI protocols?
Yes, it provides hardware offloads for Fibre Channel over Ethernet (FCoE) and iSCSI, optimizing CPU utilization and storage performance.
What is the maximum throughput per port on this adapter?
Each SFP+ port supports up to 10 Gbps bi-directional throughput, delivering a total aggregated bandwidth of 40 Gbps.
How do I install the HPE FlexFabric 536FLR-T adapter?
Power down the server, insert the adapter into an available FlexibleLOM slot, secure the latch, then power up and install HPE network drivers via Intelligent Provisioning.
Which operating systems are supported by this adapter?
Supported OSes include Microsoft Windows Server, Red Hat Enterprise Linux (RHEL), SUSE Linux Enterprise Server (SLES), VMware ESXi, and XenServer.
How can I update the firmware on the 764303-B21 adapter?
Use HPE Service Pack for ProLiant (SPP) or HPE Smart Update Manager to apply the latest firmware bundles and driver updates seamlessly.
Does the adapter support SR-IOV for virtualization workloads?
Yes, the HPE FlexFabric 536FLR-T supports SR-IOV, enabling multiple virtual functions per physical port and improving VM network performance.
What differentiates this adapter from other 10Gb 4-port FLR cards?
Unlike standard FLR cards, the 536FLR-T supports Fibre Channel over Ethernet, hardware offloads, FlexFabric and HPE OneView integration for advanced convergence.
What is the typical power consumption of the 764303-B21?
Under full load, the adapter consumes approximately 10–12 Watts, depending on network traffic and link configurations.
What warranty and support options are available for this adapter?
HPE provides a one-year limited warranty with worldwide support; optional care packs extend hardware coverage and onsite response up to 3 years.
How can I troubleshoot link or connectivity issues?
Verify transceiver type and cable compatibility, check link LED indicators, update firmware/drivers, and use HPE Insight Diagnostics for detailed error logs.
Where can I download drivers and management software for the 764303-B21?
Visit the HPE Support Center, enter SKU 764303-B21, and download the latest network drivers, firmware bundles, and HPE OneView plugins.