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727055-B21: HPE Ethernet 10Gb 2-port 562FLR-SFP+ Adapter

HPE 727055-B21 Network adapter
HPENetwork adapters

Also listed as: 790317-001, 727053-001, X710-DA2 · made by Intel

The HPE Ethernet 10Gb 2-port 562FLR-SFP+ Adapter is an advanced FlexibleLOM network card powered by the Intel X710 controller for HPE ProLiant Gen9 servers. Offering hardware offloads for network virtualization overlays (VXLAN, NVGRE) and PCIe 3.0 x8 bus interface, it provides optimized packet processing for enterprise clouds and container clusters.

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Specifications

Part number727055-B21
BrandHPE
Made byIntel
TypeNetwork adapters
Other numbers790317-001, 727053-001, X710-DA2
Statusend of sale
ControllerIntel X710-BM2 (Fortville)
Host interfacePCIe 3.0 x8 (FlexibleLOM form factor)
Network ports2x 10GbE SFP+ optical / DAC ports
Data rate10 Gb/s per port (20 Gb/s aggregate)
FeaturesVXLAN, NVGRE, GENEVE tunnel offloading, SR-IOV up to 128 VFs, DPDK, Energy Efficient Ethernet

About the 727055-B21

727055-B21 is the HPE Ethernet 10Gb 2-port 562FLR-SFP+ FlexibleLOM network adapter for ProLiant Gen9 servers. Powered by Intel's X710-BM2 (Fortville) controller, it delivers dual 10GbE SFP+ ports with dedicated hardware engines that offload VXLAN, NVGRE, and GENEVE encapsulation, accelerating virtualized and software-defined network architectures.

Compatibility

Compatible with all HPE ProLiant Gen9 servers equipped with FlexibleLOM slots, including DL380 Gen9, DL360 Gen9, DL560 Gen9, DL580 Gen9, ML350 Gen9, Apollo 4200 Gen9, and SimpliVity 380 Gen9. Supported across VMware vSphere 7.x/8.x, Microsoft Windows Server, and Linux kernels.

How to identify a genuine unit

FlexibleLOM mezzanine form-factor network adapter card featuring dual 10GbE SFP+ cages and an Intel X710 ASIC beneath a black heatsink. Product label shows option part number 727055-B21, spare part number 790317-001, and assembly part number 727053-001.

Buying used

Inspect the SFP+ receptacle connector pins and verifying that both ports latch optical transceivers securely. Power on in a server to verify that firmware updates flash smoothly without NVM integrity warnings and that both ports pass standard loopback diagnostics.

Reference prices (last 12 months, updated 2026-10-27)

Used: USD 38 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
ebay.comusedUSD 38Tested working HPE 562FLR-SFP+ 10GbE Dual Port FlexibleLOM2026-10-27

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

Fits these models

Works together

How the HPE 727055-B21 connects to servers, storage and the network: 3 ways, with the hardware on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Switches

Storage

Optics

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Switches

Storage

Optics

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Switches

Optics

Hyperconverged cluster: how it fits together

Plan and size it

Check compatibility with HPE

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that HPE has tested with the HPE 727055-B21.

Equivalent part numbers

FAQ

What is the key advantage of the 562FLR (X710) over the 560FLR (82599)?

The 562FLR uses PCIe 3.0 x8 host bus interface and provides hardware offloading for VXLAN, NVGRE, and GENEVE overlay tunnels, significantly reducing host CPU utilization.

Does 727055-B21 support 1GbE SFP optical transceivers?

Yes, the SFP+ cages support dual-speed operation at both 1GbE and 10GbE speeds depending on the installed transceiver.

Buying or selling 727055-B21?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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