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P10118-B21: HPE Ethernet 10/25Gb 2-port SFP28 BCM57414 OCP3 Adapter

HPE P10118-B21 OCP adapterPCIe 3.0 x825GbEOCP 3.0
HPEOCP adaptersPCIe 3.0 x8

Also listed as: P12871-001, P10120-001, BCM957414M4140C, BCM57414-OCP · made by Broadcom

The HPE P10118-B21 is a dual-port 10/25GbE SFP28 OCP 3.0 mezzanine network adapter built around the Broadcom BCM57414 controller. It installs into dedicated OCP 3.0 slots on HPE ProLiant Gen10 Plus and Gen11 servers, saving PCIe riser slots while providing RoCE v2 hardware offload, VXLAN, and NVGRE protocol acceleration. Buyers of pre-owned units should inspect the ejector latch and verify thumb-screw mechanism integrity.

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Specifications

Part numberP10118-B21
BrandHPE
Made byBroadcom
TypeOCP adapters
Other numbersP12871-001, P10120-001, BCM957414M4140C, BCM57414-OCP
Statuscurrent
Speed25GbE
Ports2x SFP28
InterfacePCIe 3.0 x8
Form factorOCP 3.0
ControllerBroadcom BCM57414
Generation fitGen10 Plus / Gen11

About the P10118-B21

The HPE P10118-B21 is an Open Compute Project (OCP) 3.0 Small Form Factor network adapter delivering two 10/25GbE SFP28 ports. Driven by the Broadcom BCM57414 NetXtreme-E ASIC, it provides hardware-based RoCE v2, packet filtering, and single-root I/O virtualization (SR-IOV) in high-density rack computing environments. By sliding into a rear-accessible OCP 3.0 slot, it frees standard PCIe expansion slots for accelerators, GPUs, or storage controllers.

Compatibility

Engineered strictly for servers featuring OCP 3.0 mezzanine bays, standard on HPE ProLiant Gen10 Plus and Gen11 servers (DL380 Gen10 Plus/Gen11, DL360 Gen10 Plus/Gen11, DL385 Gen11, and DL325 Gen11). It cannot be fitted into legacy FlexibleLOM slots found on Gen9 or standard Gen10 non-Plus systems, as the physical connectors and pin layouts are entirely different. It requires no additional PCIe riser hardware.

How to identify a genuine unit

Genuine units display an HPE security label stating Option Part Number P10118-B21, Spare Part Number P12871-001, and Assembly Number P10120-001. The adapter is housed in an OCP 3.0 metal tray with an ejector latch mechanism. In iLO 5 and iLO 6 under Network Adapters, it reports as 'HPE Ethernet 10/25Gb 2-port BCM57414 OCP3 Adapter' with HPE signed firmware.

Buying used

When evaluating used P10118-B21 adapters, check the spring-loaded release lever and captive thumb screw on the rear faceplate to ensure smooth latching into server OCP slots. Inspect the gold edge connector pins for excessive wear or gouges from frequent insertion. Check that the card powers up normally in the host without generating OCP power-fault or link negotiation errors in the iLO Event Log.

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

New: USD 345 (1 sighting, Oct 2026)

Refurbished: USD 165 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
serversupply.comnewUSD 345New factory sealed retail option kit2026-10-27
globalonetechnology.comrefurbishedUSD 165Refurbished genuine OCP 3.0 card2026-10-27

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

Fits these models

Works together

How the HPE P10118-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 P10118-B21.

Equivalent part numbers

FAQ

Can P10118-B21 fit into a ProLiant DL380 Gen10 server?

No, standard Gen10 non-Plus servers feature FlexibleLOM slots rather than OCP 3.0 slots. Gen10 Plus and Gen11 servers use OCP 3.0 and natively support P10118-B21.

Does P10118-B21 support network boot via PXE and iSCSI?

Yes, the adapter fully supports UEFI PXE boot, legacy BIOS PXE, and iSCSI boot across both ports with iLO management integration.

Buying or selling P10118-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