HPE 872725-B21

InfiniBand EDR 100 Gb 1-Port 841QSFP28Network Adapter

The HPE 872725-B21 is a high-performance single-port InfiniBand EDR (100 Gb/s) Network Adapter featuring a QSFP28 interface based on Mellanox ConnectX-5 technology. Designed for high-performance computing, storage clusters, and data center fabrics, this adapter delivers ultra-low latency and high throughput over InfiniBand and compatible 100 Gb Ethernet fabrics. With a standard PCIe Gen3 ×16 host interface and compact stand-up form factor, it fits a range of HPE ProLiant Gen9/Gen10 servers, enabling accelerated workloads, fast inter-node communication, and efficient deployment in dense compute environments.

Features

Leveraging the Mellanox ConnectX-5 chipset, this adapter supports the IBTA 1.3 InfiniBand standard and 100 Gb Ethernet, providing flexible deployment across both storage and compute fabrics. It offers advanced offload features including RDMA, GPUDirect, and MPI tag matching/rendezvous offloads×minimizing CPU usage and maximizing throughput. Certified for use with EDR and FDR InfiniBand switches, it ensures seamless integration in HPC clusters and storage networks. Its low-profile PCIe Gen3 ×16 interface allows deployment in dense rack configurations and tall or short bracket options provide installation flexibility.

Advanced Options

Built to meet the demands of continuous high-throughput computing environments, the 872725-B21 adapter delivers consistent 100 Gb/s performance with sub-microsecond latency×ideal for HPC, large-scale simulation, and storage fabrics. Its hardware offloads reduce CPU utilization,

Product Key Features

• 1 × QSFP28 port supporting 100 Gb/s InfiniBand EDR
  

• Mellanox ConnectX-5 architecture with MPI offload and adaptive routing
  

• PCIe Gen3 ×16 host interface for maximum throughput
  

• Hardware acceleration through RDMA and GPUDirect
  

• Compatible with InfiniBand EDR/FDR and 100 Gb Ethernet switches
  

• Stand-up, low-profile form factor for dense server environments

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Reliability & Performance

allowing server resources to focus on compute tasks. Rated for typical power consumption of ~15.5 W (passive cables) and up to ~20-25 W with active optics, the card operates reliably under sustained loads and supports full environmental compliance (RoHS, FCC Class A etc.) per industry standards. Compatible with a wide range of HPEProLiant Gen9/Gen10 servers, this adapter excels in high-density, mission-critical deployment scenarios.

Key Features :

• • InfiniBand EDR (100 Gb/s) via QSFP28

  • Mellanox ConnectX-5 chipset

  • PCIe Gen3 ×16 host interface

  • Hardware offloads: RDMA, GPUDirect, MPI matchmaking

  • Supports both InfiniBand and 100 Gb Ethernet networks

  • Low-profile "stand-up" form factor

Specification	Details
Model Number	872725-B21
Product Type	InfiniBand EDR / 100 Gb Ethernet Network Adapter
Port Configuration	1 × QSFP28
Data Rate	100 Gb/s
Chipset	Mellanox ConnectX-5
Protocols Supported	IBTA 1.3 (InfiniBand EDR), 100 Gb Ethernet
Bus Interface	PCI Express Gen3 ×16
Offload Features	RDMA, GPUDirect, MPI Tag Matching/Rendezvous
Form Factor	Stand-up low-profile (tall/short brackets)
Dimensions (H×W×D)	~7" × 8.5" × 2" (≈17.8 × 21.6 × 5.1 cm)
Weight	~1 lb (≈0.45 kg)
Power Consumption (typical)	~15.5 W (passive cable), ~20-25 W (active)
Operating Temperature	0 °C to 55 °C; humidity up to 95%
Compliance	RoHS, FCC Class A, ICES-003, VCCI etc.
Compatibility	HPE ProLiant Gen9/Gen10, Apollo/Nimble etc.
Warranty	90 Days (most listings)