Detailed Specifications
HPE P25960-B21 - Mellanox MCX623106AS-CDAT Dual-Port 100 GbE QSFP56 Adapter
Overview
The HPE P25960-B21 is a dual-port 100 GbE server adapter (based on the Mellanox MCX623106AS-CDAT) designed for high-performance computing, hyper-scale data centres or environments with heavy east-west traffic. It supports two QSFP56 ports, enabling 100 Gb per port or breakout configurations (e.g., 4×25 Gb) in servers via a PCIe 4.0 x16 slot. Fit this into an HPE Gen10/Gen10+ server or compatible platform and use it for ultra-low-latency, high-bandwidth connectivity×ideal for storage fabrics, compute clusters, or switch uplinks. It brings enterprise-grade Ethernet and RoCE capabilities for workloads demanding high throughput and low latency.
Key Features
Dual QSFP56 ports supporting 100 GbE each; supports breakout to 4×25 Gb per port for flexible deployment.
PCIe 4.0 ×16 interface ensures full bandwidth to the host, supporting up to ~200 Gb/s aggregate throughput (2 × 100 Gb) as listed.
Vendor-qualified HPE part (MCX623106AS-CDAT variant) ensures compatibility, firmware support and full integration with HPE server ecosystems.
Optimised for high-density, latency-sensitive environments×with features such as RDMA over Converged Ethernet (RoCE), industry-leading offloads and efficient CPU use.
Technical Specifications
| Specification | Detail |
|---|
| Brand | HPE |
| Part Number | P25960-B21 |
| Product Type | Dual-Port 100GbE Network Adapter |
| Key Spec - Ports | 2 × QSFP56 |
| Key Spec - Data Rate | 100 Gb/s per port (200 Gb/s aggregate) |
| Key Spec - Interface | PCIe 4.0 x16 |
| Management | Standard NIC management via server OS + firmware tools |
| Power Requirements | Typical for 100 GbE adapter (specific wattage depends on server) |
| Dimensions & Weight | Full-height bracket (standard server adapter card) |
| Warranty | HPE standard warranty (check region) |
