Detailed Specifications
HPE 877691-B21 841QSFP28 InfiniBand EDR 2-Port Network Adapter
Overview
The HPE 877691-B21 is a high-end network adapter tailored for data-centre and high-performance computing (HPC) environments requiring dual 100 Gb/s uplinks. Each of its two QSFP28 ports supports 100 Gb/s InfiniBand EDR and 100-Gigabit Ethernet protocols, offering up to 200 Gb/s aggregate bandwidth across one adapter slot. With a PCI Express Gen3 ×16 host interface, it delivers line-rate throughput, ultra-low latency and large virtualization/cluster-fabric support for converged compute-storage and HPC nodes. It fits standard low-profile server slots certified by HPE and is built to handle dual high-speed links in a compact form-factor, ideal where cabling density and performance both matter.
Key Features
2 × QSFP28 ports each supporting 100 Gb/s for dual high-speed uplinks
Supports both InfiniBand EDR and 100-Gigabit Ethernet protocols
PCI Express Gen3 ×16 interface for full throughput host connectivity
Low-profile server adapter card suitable for dual high-speed uplinks
Technical Specifications
| Specification | Value |
|---|
| Brand | HPE |
| Part Number | 877691-B21 |
| Product Type | 841QSFP28 InfiniBand EDR / 100GbE 2-Port Adapter |
| Port Count | 2 |
| Supported Link Speeds | 100 Gb/s per port |
| Port Type | QSFP28 |
| Host Interface | PCI Express Gen3 ×16 |
| Protocols Supported | InfiniBand EDR, 100-Gigabit Ethernet |
| Form Factor | Low-profile server adapter |
| Typical Use Case | Dual 100 Gb uplinks for HPC, storage or compute convergence |
| Compatible Platforms | HPE-certified servers supporting 100 Gb uplinks |
| Virtualization Features | Supports large number of virtual functions |
