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817738-B21: HPE Ethernet 10Gb 2-port SFP+ 562SFP+ Adapter

HPE 817738-B21 Network adapterPCIe 3.0 x810GbEStandup PCIe Card
HPENetwork adaptersPCIe 3.0 x8

Also listed as: 817740-001, 790317-001, 790315-001, X710-DA2, 562SFP+ · made by Intel

The HPE 817738-B21 (562SFP+) is a dual-port 10GbE SFP+ PCIe 3.0 x8 network interface card powered by the Intel X710 controller. Widely deployed across HPE ProLiant Gen9 and Gen10 servers, it features comprehensive hardware virtualization offloads, SR-IOV support, and broad driver compatibility across VMware ESXi, Windows Server, and Linux distributions. Secondary market buyers should verify bracket inclusion and update NVM firmware to avoid legacy driver conflicts.

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Specifications

Part number817738-B21
BrandHPE
Made byIntel
TypeNetwork adapters
Other numbers817740-001, 790317-001, 790315-001, X710-DA2, 562SFP+
Statusend of sale
Speed10GbE
Ports2x SFP+
InterfacePCIe 3.0 x8
Form factorStandup PCIe Card
ControllerIntel Ethernet Controller X710-BM2
Generation fitGen9 / Gen10 / Gen10 Plus

About the 817738-B21

The HPE 817738-B21, marketed by HPE as the 562SFP+ adapter, is a dual-port 10 Gigabit Ethernet PCIe card based on Intel's Fortville (X710) controller family. Designed for high-volume enterprise data centers, it provides two 10G SFP+ cages for optical transceivers or direct-attach copper cables. It delivers hardware-based network virtualization tunneling offloads for VXLAN and NVGRE, helping reduce host CPU utilization in virtualized private clouds.

Compatibility

Compatible with standard PCIe 3.0 x8 or x16 slots on HPE ProLiant Gen9, Gen10, and Gen10 Plus servers (such as DL380 Gen9/Gen10, DL360 Gen9/Gen10, DL560 Gen10, and ML350 Gen10). It fits both full-height and low-profile riser slots. While functional in Gen11 servers with PCIe 4.0/5.0 slots, newer 10/25GbE adapters like P10115-B21 are generally favored for Gen11 configurations.

How to identify a genuine unit

Legitimate cards display an HPE label showing Option Part Number 817738-B21, Spare Part Number 817740-001, and Assembly Part Number 790317-001. Underneath the small black heatsink sits the Intel X710 ASIC. In HPE iLO and operating system network tools, it enumerates as 'HPE Ethernet 10Gb 2-port 562SFP+ Adapter' (Intel i40e driver family).

Buying used

When sourcing pre-owned 817738-B21 cards, verify that the card includes both full-height and low-profile PCI mounting brackets. Intel X710 cards from early production runs required Non-Volatile Memory (NVM) updates to resolve link flap and stability issues under early ESXi releases; verify that the card can be updated to the latest HPE NVM firmware release. Inspect SFP+ cages for bent pins or debris.

Reference prices (last 14 days, updated 2026-10-27)

Refurbished: USD 85 (1 sighting, Oct 2026)

Used: USD 45 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
serversupply.comrefurbishedUSD 85Refurbished card tested with updated NVM2026-10-27
ebay.comusedUSD 45Clean working pull with low profile bracket2026-10-27

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

Fits these models

Works together

How the HPE 817738-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 817738-B21.

Equivalent part numbers

FAQ

What driver does the HPE 562SFP+ (817738-B21) use in Linux and ESXi?

It uses the standard Intel i40e driver for Linux and the native i40en driver included out-of-the-box in VMware ESXi.

Does 817738-B21 support 1GbE SFP optical transceivers?

Yes, the Intel X710 controller supports dual-rate operation, allowing 1GbE SFP transceivers to connect alongside 10GbE SFP+ modules.

Buying or selling 817738-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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Sources