What is the brand and model of the P42045-B21 adapter?

The P42045-B21 is a Hewlett Packard Enterprise network adapter based on the Mellanox MCX631102AS-ADAT platform. It is described specifically as the Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter for HPE, indicating HPE branding combined with Mellanox network controller technology.

What Ethernet speeds does this HPE Mellanox adapter support?

According to the product designation, the Mellanox MCX631102AS-ADAT adapter supports Ethernet operation at 10Gb and 25Gb. It is identified as an Ethernet 10/25Gb 2-port SFP28 Adapter, meaning it can be deployed in environments where links are provisioned at either 10Gb or 25Gb over compatible SFP28 connections.

How many network ports are available on the P42045-B21 adapter?

The adapter is described as a 2-port SFP28 solution. This means it provides two Ethernet network ports presented through SFP28 interfaces. Each port can be used to connect to compatible network equipment, allowing dual-link configurations when planning redundancy, separate networks, or other dual-port designs.

What interface type is this Ethernet adapter categorized under?

The product is categorized as a PCIe 3.0 Ethernet Adapter, specifically in the dual-port 10/25Gb SFP28 class. This indicates it is intended for installation into PCIe 3.0 expansion capability within a system, functioning as a plug-in Ethernet network adapter rather than an external device.

What is the primary product category for this HPE network adapter?

This adapter falls under the Network Adapter category and more specifically under PCIe 3.0 Ethernet Adapter and Dual-port 10/25Gb SFP28. These categorizations indicate its function as an internal network interface card that provides two 10/25Gb Ethernet ports over SFP28 within a PCIe 3.0 framework.

P42045-B21 - HPE Hewlett Packard Enterprise P42045-B21 10/25Gb 2-port adapter

Name: HPE Hewlett Packard Enterprise P42045-B21 10/25Gb 2-port adapter
Brand: HPE
SKU: P42045-B21
Price: 815 USD
Availability: InStock

P42045-B21 - HPE Hewlett Packard Enterprise P42045-B21 10/25Gb 2-port adapter | US IT Hardware

Product overview

The Hewlett Packard Enterprise Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter for HPE, SKU P42045-B21, is a dual-port network adapter designed for environments that require 10Gb and 25Gb Ethernet connectivity through SFP28 interfaces. Classified as a PCIe 3.0 Ethernet adapter in the dual-port 10/25Gb SFP28 category, it supports two Ethernet ports for flexible link configurations. This adapter is suited to infrastructure where both 10Gb and 25Gb operation may be deployed over SFP28 connections. As an HPE branded Mellanox solution, it targets standardized data center and enterprise networking architectures that adopt 10/25Gb Ethernet as a common access speed. The form factor and capabilities align with modern PCIe 3.0 networking needs. Organizations can integrate this adapter into HPE-focused builds that plan around dual-port SFP28 connectivity and 10Gb or 25Gb Ethernet link options.

Dual-port SFP28 Ethernet adapter
Supports 10Gb and 25Gb Ethernet speeds
Designed for PCIe 3.0 Ethernet slots
HPE branded Mellanox MCX631102AS-ADAT
Suited to dual-port 10/25Gb SFP28 use cases
Identified by HPE SKU P42045-B21

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Featuring

Manufacturer part #	P42045-B21
Brand	HPE
Condition	New
Model	P42045-B21
Form Factor	Plug-in card
Intended Use	High-performance networking for HPE ProLiant servers and HPE systems
Product Line	Mellanox MCX631102AS-ADAT Ethernet Adapter for HPE
Product Type	Network adapter
RDMA Support	Remote Direct Memory Access
RoCE Support	RoCE v1 and RoCE v2
Adapter Bus Type	PCI Express

Compatible systems

Adapter is intended for HPE ProLiant servers and other HPE systems; specific models and OS versions not enumerated.

Hewlett Packard Enterprise ProLiant
Listed as compatible with HPE ProLiant servers and other HPE systems on product description pages

Best for

Dual-port SFP28 connectivity
Suitable for deployments that need two SFP28 Ethernet interfaces on a single adapter, enabling flexible link planning around 10Gb and 25Gb Ethernet operation.
10/25Gb Ethernet environments
Designed for infrastructures standardizing on 10Gb and 25Gb Ethernet, where a Mellanox MCX631102AS-ADAT adapter offers dual-port connectivity within this speed range.
PCIe 3.0 Ethernet adapter slots
Appropriate for systems that provide PCIe 3.0 expansion capability and require a dual-port 10/25Gb SFP28 Ethernet adapter, as categorized for this product.
HPE-based network builds
Fits HPE-focused builds that specify Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 adapters, ensuring alignment with HPE branding and part number P42045-B21.
Consolidated network interface design
Useful where two Ethernet ports are required on one PCIe 3.0 card, using SFP28 interfaces to support 10Gb and 25Gb Ethernet links in a compact design.

Details

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Data Link Protocols	Gigabit Ethernet, 10 Gigabit Ethernet, 25 Gigabit Ethernet

Controller / Chipset	Mellanox MCX631102AS-ADAT

Power Characteristics	Low power consumption (exact wattage not specified)

Networking Ports & Interfaces

Ports	2 x SFP28 Ethernet ports
Port Type	SFP28
Host Interface	PCI Express 3.0 x8
PCIe Interface	PCIe 3.0 x8
Number of Ports	2
Ethernet Interface	10/25Gb Ethernet over SFP28
Network Technology	10/25 Gigabit Ethernet
Supported Ethernet Speeds	1 GbE, 10 GbE, 25 GbE

HPE Hewlett Packard Enterprise P42045-B21 10/25Gb 2-port adapter