HPE P55097-B21 – DL385 Gen11 x16 2U Secondary Riser Kit

HPE P55097-B21 – DL385 Gen11 x16 2U Secondary Riser Kit

Overview

HPE P55097-B21 is a PCIe secondary riser kit designed for HPE ProLiant DL385 Gen11 servers to expand PCIe slot availability. It enables additional high-speed expansion options for enterprise server configurations.

The kit provides x16 PCIe connectivity, allowing support for high-bandwidth adapters such as network cards, storage controllers, and GPU-class accelerators depending on server configuration.

It is designed for 2U rack server chassis environments where internal expansion capacity is required without changing the server footprint.

It integrates directly into the DL385 Gen11 platform and is used to extend system scalability for compute and I/O-heavy workloads.

It is part of HPE’s modular server expansion ecosystem for Gen11 ProLiant infrastructure.

Typical Deployment Scenarios

Used in enterprise data centers where additional PCIe expansion is required for networking, storage acceleration, or compute expansion. Common in HPE DL385 Gen11 servers running virtualization, database workloads, and high-throughput applications. Also used in environments requiring flexible hardware scaling within a 2U chassis design.

Technical Specifications

Compatibility / Ecosystem

Compatible with HPE ProLiant DL385 Gen11 servers. Works within HPE Gen11 server expansion architecture supporting PCIe-based network, storage, and accelerator cards. Designed for enterprise environments requiring scalable I/O expansion in a 2U chassis.