What is the network speed of the HPE P55329-B21 adapter?

The HPE P55329-B21 is specified as a 100Gbps network adapter. It is described as an MLX Broadcom 100Gbps Single-Port OCP3 SPI Adapter, indicating that its primary capability is to provide a 100Gbps connection on its single network port for datacenter environments.

How many network ports does the HPE P55329-B21 provide?

This adapter is defined as a single-port model. The product name states it is a 100Gbps Single-Port OCP3 SPI Adapter, so it offers one network interface rather than multiple ports. This is important when planning how many adapters are needed per server to reach desired link counts.

What form factor does the HPE P55329-B21 use?

The HPE P55329-B21 is an OCP3 SPI network adapter. This means it is intended for systems that support the OCP3 SPI interface, and should be considered where servers or appliances provide compatible OCP3 slots for network expansion.

For what type of environment is the HPE P55329-B21 intended?

The product is categorized at the datacenter level and described as an MLX Broadcom 100Gbps Single-Port OCP3 SPI network adapter. This classification indicates it is intended for datacenter networking environments where 100Gbps single-port OCP3 SPI adapters are appropriate for server or infrastructure connectivity.

What is the brand and model of the P55329-B21 adapter?

The adapter is branded by HPE and identified as the MLX Broadcom 100Gbps Single-Port OCP3 SPI Adapter. The SKU P55329-B21 uniquely refers to this specific HPE network adapter model within the 100Gbps single-port OCP3 SPI category.

P55329-B21 - HPE P55329-B21 100Gbps single-port OCP3 SPI adapter

Name: HPE P55329-B21 100Gbps single-port OCP3 SPI adapter
Brand: HPE
SKU: P55329-B21
Price: 1305 USD
Availability: InStock

P55329-B21 - HPE P55329-B21 100Gbps single-port OCP3 SPI adapter | US IT Hardware

Product overview

The HPE P55329-B21 MLX Broadcom 100Gbps Single-Port OCP3 SPI Adapter is designed for datacenter networking environments that require a 100Gbps-capable interface in an OCP3 SPI form factor. This adapter provides a single high-speed port, enabling straightforward integration into OCP3-compatible infrastructure where a single 100Gbps connection is appropriate. Based on Broadcom MLX technology, it aligns with datacenter requirements for scalable and modular network connectivity while remaining focused on the defined 100Gbps single-port capability. As an OCP3 SPI network adapter, it fits into supported OCP3 slots in compatible systems, helping standardize deployments around this interface type. The combination of HPE branding, Broadcom MLX technology, 100Gbps bandwidth rating, and single-port configuration makes this adapter a targeted choice for datacenter teams standardizing on OCP3 SPI network adapters.

100Gbps datacenter-class network adapter
Single-port design for one 100Gbps link
OCP3 SPI network adapter form factor
HPE branded MLX Broadcom adapter
Suitable for datacenter deployments
Designed for OCP3 SPI-based hosts

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Featuring

Manufacturer part #	P55329-B21
Brand	HPE
Condition	New
Model	P55329-B21
Packaging	New, sealed product
Technology	Broadcom
Form Factor	OCP3
Product Line	MLX Broadcom
Product Type	Network Adapter
Intended Platform	Dense server deployments
OCP Specification	OCP 3.0 Small Profile (SPI)

Compatible systems

Confirmed as an HPE Broadcom 100Gbps single-port OCP3 network adapter.

Best for

Datacenter networking
Suitable for datacenter environments that require a 100Gbps single-port network adapter in an OCP3 SPI form factor.
OCP3 SPI infrastructure
Designed for deployments standardized on OCP3 SPI network adapters, using the single-port 100Gbps configuration for compatible hosts.
Single 100Gbps uplink scenarios
Applies to servers or appliances that need one 100Gbps network port rather than multiple links, using the single-port design.
Standardized HPE platforms
Fits environments that prefer HPE-branded components, leveraging the MLX Broadcom 100Gbps single-port OCP3 SPI adapter.
High-bandwidth workloads
Used where a single 100Gbps port is sufficient to support high-bandwidth applications within OCP3 SPI-capable systems.

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Details

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Data Transfer Rate	100 Gbps

Networking Ports & Interfaces

Port Count	1 port
Bus Interface	OCP 3.0 Small Form Factor (SPI) interface
Ethernet Speed	100 Gbps
Network Interface	Single-port OCP3 SPI
Port Type Description	Single high‑speed 100G network port for server connectivity
Number of Network Ports	1
Host Interface Generation	Designed for modern PCI Express 4.0–class server platforms (OCP 3.0 NIC form factor)

HPE P55329-B21 100Gbps single-port OCP3 SPI adapter