# Network adapter HP Ethernet 10Gb 546FLR-SFP+ 2-port SFP+

**URL:** https://aio.lv/en/product--hp-779799-b21-rfb--987575
**Data updated:** 2026-01-12 19:29 (EET)
**Category:** Network Cards
**Manufacturer:** HP
**Manufacturer code:** 779799-B21-RFB
**EAN:** 5712505661628
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HP Ethernet Adapter 10Gb 546FLR-SFP+ is a dual-port SFP+ network adapter delivering 10 Gigabit Ethernet connectivity. Designed for installation in compatible HP servers, it provides two SFP+ ports for fiber or direct-attach cabling, improving network throughput and reducing latency. Suitable for virtualization, storage and high-performance networking workloads.

## Long description

HP Ethernet Adapter 10Gb 546FLR-SFP+ 2-port SFP+ (MPN 779799-B21-RFB, EAN 5712505661628) is a dual-port 10 Gigabit network adapter designed for compatible HP server platforms. The adapter provides two SFP+ interfaces that support fiber transceivers or direct-attach copper cables, enabling high-throughput, low-latency connectivity for virtualization, storage, and other performance-sensitive network workloads. The board installs in an FLR (FlexibleLOM/rear) slot or compatible mezzanine connector as specified by the server platform, and is intended for environments that require 10GbE links in a compact server configuration.
Advantages
The adapter offers dual SFP+ ports for flexible cabling options, delivering 10 Gigabit Ethernet bandwidth per port and reducing network bottlenecks. Its form factor is compatible with select HP server expansion slots, enabling dense integration without consuming full-length PCIe space. The design supports common use cases such as virtualization and storage traffic, while lowering latency compared with lower-speed adapters. The product is identified by HP part number 779799-B21-RFB and EAN 5712505661628 for accurate procurement and compatibility checks.
Suitable for
Virtualization hosts and hypervisor clusters requiring multiple 10GbE uplinks
Storage networks and SAN connectivity with SFP+ fiber or DAC
High-performance networking for database and application servers
Server consolidation where compact FLR/mezzanine form factor is needed
Key specifications
Brand: HP
Model: Ethernet 10Gb 546FLR-SFP+
Ports: 2 x SFP+
Data rate: 10 Gigabit Ethernet per port
Form factor: FLR-compatible / mezzanine for supported HP servers
MPN: 779799-B21-RFB
EAN: 5712505661628
How to use
Install the adapter into a compatible HP server slot according to the server service manual and HP installation guidelines. Insert appropriate SFP+ transceivers or direct-attach SFP+ cables into the two SFP+ ports, ensuring the selected media is supported by both the adapter and the connected switch or SAN device. Configure link aggregation, VLANs, or other network settings in the server operating system or hypervisor network management utility as required. Install HP-recommended drivers and firmware updates to ensure full functionality and performance.
Usage recommendations
Verify server platform compatibility and supported FLR/mezzanine slot requirements before purchase. Use vendor-approved SFP+ transceivers or DACs and keep firmware and drivers up to date to maintain stability and performance.

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### What is the warranty period?

All HP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP service centers and through AiO.lv

### Can the product be returned after purchase?

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