PCI Express Riser Card HP Dual x16 PCI Express riser 875059-001 for server expansion

HP Dual x16 PCI Express riser 875059-001 is a server riser card that provides two full-length x16 PCI Express slots to expand PCIe connectivity in compatible HP server systems. The riser is intended for installation in server chassis that accept this riser form factor and enables additional cards such as GPUs, network adapters, or storage controllers to be fitted without direct motherboard PCIe slot availability.

Advantages

This riser card increases the number of available full-length PCIe x16 expansion slots in supported HP servers, allowing flexible allocation of high-bandwidth cards. It preserves signal integrity and mechanical compatibility with the server chassis design, supporting straightforward replacement or server upgrades. The design minimizes additional cabling by integrating the slots on a single riser assembly and maintains appropriate spacing for thermal management of installed cards.

Suitable for

• Installing dual full-length PCIe x16 devices such as GPUs in compatible HP server models
• Adding high-performance network adapters or storage controllers that require x16 lanes
• Server upgrades where motherboard PCIe slot count is insufficient but chassis supports this riser

When it may not be suitable

This riser is designed specifically for HP server chassis that accept this particular dual x16 riser form factor; it may not fit or function in non-compatible servers or custom chassis. Compatibility with system BIOS, power delivery limits, and physical clearance should be verified before purchase to ensure full functionality.

Key specifications

• Form factor: dual full-length PCI Express x16 riser assembly
• PCIe lane configuration: two x16 slots (physical x16 connectors)
• Intended use: server expansion for additional PCIe cards
• Physical compatibility: designed for specific HP server chassis that accept this riser type

How to use

Power down the server and disconnect all power sources before attempting installation. Remove the server access panel and locate the riser bay specified for the replacement or upgrade. Carefully extract any existing riser or protective covers, align the riser card with the motherboard riser connector and chassis mounting points, and seat it firmly until it locks into place. Secure the riser with the appropriate screws or retention clips, reinstall any retained cards into the x16 slots, restore the access panel, and reconnect power. After booting, verify that the system BIOS recognizes the installed cards and install or update drivers in the operating system as required.

What to consider before purchase

• Confirm physical compatibility with your HP server model and the available riser bay
• Verify chassis clearance for dual full-length cards and cooling requirements
• Check power and cooling capacity for additional high-performance cards such as GPUs
• Ensure BIOS and firmware versions support additional PCIe devices

Usage recommendations

Use the riser in servers that explicitly list support for this riser type. For installations involving high-power cards, plan for adequate airflow and power provisioning, and update server firmware before adding new hardware to ensure reliable detection and operation.