HPE Ethernet 4x25Gb 1-port 620QSFP28 Adapter (commonly abbreviated as “HPE Eth 4x25Gb 1p 620QSFP28 Adptr”) is a high-performance PCIe-based network interface card (NIC) designed for enterprise servers. It provides flexible, high-speed Ethernet connectivity, supporting up to 100GbE aggregate bandwidth through a single QSFP28 port that can be split into four independent 25GbE links using breakout cables. This adapter is ideal for data centers, cloud computing, virtualization, and high-frequency trading environments requiring low latency and high throughput.

Based on available HPE documentation and listings, the provided Product No. 817760-001 appears to be a specific spare or assembly part number associated with this adapter model. It corresponds to the same hardware as the more commonly referenced option part number 817762-B21 (and related spare 840134-001). These are interchangeable identifiers for the same product in HPE’s parts ecosystem, where “-001” suffixes often denote spare kits or individual components.

Key Specifications

Category Details

Ports 1 x QSFP28 (configurable as 4 x 25GbE)

Data Rates 25GbE per lane; up to 100GbE aggregate

Form Factor Low-profile PCIe

Bus Interface PCIe 3.0 x16

Chipset Broadcom BCM57416

Power Consumption ~10W (typical)

Operating Temperature 0°C to 55°C

Dimensions Half-height, half-length bracket

Features

* Flexible Connectivity: The single QSFP28 port supports direct 100GbE or breakout to 4x25GbE, 2x50GbE, or other configurations with compatible cables/transceivers.

* Performance Optimizations: Includes RDMA over Converged Ethernet (RoCE) for low-latency data transfers, as well as hardware offloads for TCP/IP, UDP, IP checksum, and large send (LSO).

* Efficiency: Reduces CPU overhead in virtualized environments, supporting SR-IOV for up to 128 virtual functions.

* Standards Compliance: IEEE 802.3by (25GBASE-R) and 802.3bm (100GBASE-CR4), with support for jumbo frames up to 9KB.

Compatibility

* HPE Servers: Primarily designed for HPE ProLiant DL/ML Gen9 and Gen10 servers (e.g., DL360, DL380); backward compatible with select Gen8 models via PCIe slots.

* Operating Systems:

* Microsoft Windows Server 2016/2019/2022

* Red Hat Enterprise Linux (RHEL) 7.x/8.x/9.x

* SUSE Linux Enterprise Server (SLES) 12.x/15.x

* VMware ESXi 6.7/7.0/8.0

* Ubuntu 18.04/20.04/22.04

* Requirements: PCIe 3.0 x8 or x16 slot; no additional power connectors needed.

Availability and Pricing

This adapter is available through HPE’s official parts store, authorized resellers, and third-party vendors like Amazon, eBay, and ServerSupply. It’s often sold refurbished or new:

* New: Typically $500–$800 USD (varies by region and vendor).

* Refurbished: $200–$400 USD. For exact pricing, stock, and warranty details, check the HPE Parts Surfer or HPE official site.

Related Part Numbers

* Option Kit: 817762-B21

* Spare Kit: 840134-001 (equivalent to 817760-001)

* Board Assembly: 840133-001

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