PCIe Riser Card HP Enterprise SPS-PCA 2-S X16 X16 PCI-E S1/2 (MPN 875059-001)

HP Enterprise SPS-PCA 2-S X16 X16 PCI-E S1/2 is a dual x16 PCI Express riser card designed to expand available I/O capacity in compatible HP Enterprise server platforms. The riser converts a host connector into two full-length PCIe x16 slots, allowing installation of additional accelerator, network, or storage controller cards to increase compute, networking and storage capabilities without replacing the mainboard.

Advantages

The riser provides two PCIe x16 slots with a single host connection, enabling flexible configuration of GPUs, HBAs or NICs in a compact server chassis. Built to industry-compatible electrical and mechanical standards for enterprise servers, it helps maintain signal integrity and reliable connectivity for high-bandwidth cards. The design supports straightforward installation into designated riser bays and is suitable for hot-swap style maintenance routines when used according to system guidance.

Suitable for (tasks / use cases)

• Expanding GPU capacity for compute or machine learning workloads
• Adding additional NICs for network aggregation or redundancy
• Installing HBA or RAID controller cards for increased storage connectivity
• Upgrading server I/O in data center and virtualization environments

When it may not be suitable

This riser is intended for specific HP Enterprise server models that provide the matching riser bay and host connector. It will not function with systems that lack the required mechanical slot or electrical interface. Additionally, full performance depends on the server backplane and available PCIe lanes; systems with limited lane allocation may not deliver maximum bandwidth to both x16 slots simultaneously.

Key specifications

• Connector configuration: one host connector to two PCIe x16 slots
• Slot type: PCI Express x16 (two full-length slots)
• Form factor: riser card compatible with designated enterprise server riser bays
• Primary use: expansion of server I/O for accelerators, network and storage cards

How to use

Install the riser card into the server's designated riser bay following the server manufacturer's service manual. Power down the system or follow the platform's allowed service procedure; align the riser with the mechanical guides and seat the host connector firmly into its receptacle on the system board or backplane. Secure any retention hardware and install expansion cards into the provided x16 slots. After assembly, verify BIOS/firmware settings and confirm the operating system recognizes the newly installed cards.

What to consider before purchase

• Compatibility with your server model and available riser bay type
• Available PCIe lane allocation and bandwidth per slot on your server platform
• Physical clearance and cooling for installed expansion cards within the chassis
• Firmware and driver support for the expansion cards you plan to install

Usage recommendations

Use this riser in systems listed by the server manufacturer as compatible, verify BIOS and firmware are up to date, and plan card placement to ensure adequate airflow and power delivery for high-performance GPUs or HBAs.