Brands Guides About
HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter — main product image
HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter
HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter
HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter
HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter
HP

HP 700699-B21 Ethernet 10GB 2-Port 561FLR-T Adapter

HP 561FLR-T dual-port 10GbE adapter with Intel X540 delivers high-bandwidth server connectivity for ProLiant environments.

$27.00*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Oct 07, 2026.Price and availability are subject to change — details.

Affiliate Disclosure: As an Amazon Associate, Studio Supplies earns from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The HP 700699-B21 Ethernet 10Gb 2-Port 561FLR-T Adapter is a FlexibleLOM network adapter built for HP ProLiant servers that require high-speed 10 Gigabit Ethernet connectivity. Powered by the Intel X540 controller, it provides two independent 10GbE copper ports over a PCIe v2.1 Gen 2 x8 bus interface. The FlexibleLOM design installs in a dedicated slot on compatible ProLiant servers, preserving standard PCIe expansion slots for storage controllers, GPUs, or other add-in cards.

The adapter supports a comprehensive set of networking standards including IEEE 802.3ad link aggregation, 802.1Qaz Enhanced Transmission Selection, 802.1Qau Congestion Notification, and 802.1Qbb Priority-based Flow Control — features that are critical for Data Center Bridging and converged network environments. Operating system support covers Windows Server 2008 and 2012 variants, Red Hat Enterprise Linux 5.7 through 6.3, SUSE Linux Enterprise Server 10 and 11, Solaris 10 and 11, VMware vSphere 4.1 and 5.0, and Citrix XenServer 6.0 and 6.1. For ProLiant deployments needing reliable, high-throughput networking with failover capability, the 561FLR-T is a well-proven solution.

Key Features

More for the money with this high quality Product

Offers premium quality at outstanding saving

Excellent product

100% satisfaction

Specifications

Brand
HP
Model
700699-B21
Type
Ethernet 10Gb 2-Port Adapter (FlexibleLOM)
Network Controller
Intel X540
Ports
2x 10GbE (10GBASE-T)
Bus Type
PCIe v2.1 (Gen 2) x8
Server Compatibility
HP ProLiant (FlexibleLOM slot)
IEEE Compliance
802.3, 802.3x, 802.3ad, 802.1Qaz, 802.1Qau, 802.1Qbb, 802.1ax
Supported OS
Windows Server 2008/2012, RHEL 5.7–6.3, SLES 10/11, Solaris 10/11, VMware vSphere 4.1/5.0, Citrix XenServer 6.0/6.1

Frequently Asked Questions

The 561FLR-T is designed for HP ProLiant servers that support the FlexibleLOM (FLR) form factor. It installs in the dedicated FLR slot, not a standard PCIe expansion slot.
Yes. It is IEEE 802.3ad and 802.1ax compliant, supporting Link Aggregation Control Protocol (LACP) for bonding both ports to increase throughput and redundancy.
It uses the Intel X540 controller, a well-established chipset for 10GbE networking with broad OS driver support.
Yes. Both ports operate independently, allowing you to run two separate 10GbE connections or bond them together for up to 20 Gbps aggregate bandwidth.
Supported operating systems include Windows Server 2008/2012, RHEL 5.7–6.3, SLES 10/11, Solaris 10/11, VMware vSphere 4.1/5.0, and Citrix XenServer 6.0/6.1.

Related Products