PCI riser cage HP Enterprise 875056-001-RFB for server expansion

HP Enterprise PCI riser cage 875056-001-RFB is a server expansion component designed to hold PCIe riser cards and enable installation of additional add-in cards in compatible HP Enterprise servers. Supplied as a replacement or upgrade part by HP Enterprise, this riser cage supports increasing system I/O capacity and tailoring server configurations for storage controllers, network cards, or accelerator modules. The part number 875056-001-RFB and EAN 5706998860941 identify the specific assembly for compatibility checks and inventory purposes.

Advantages

The PCI riser cage provides a stable mechanical and electrical housing for riser cards, ensuring correct alignment and connection with the server backplane. As an OEM HP Enterprise part, it maintains original form, fit, and function for systems designed around HP server architectures. Using the correct riser cage helps reduce installation errors and supports hot-swap or field-replaceable maintenance workflows where applicable.

Suitable for

• Upgrading HP Enterprise servers to add PCIe expansion cards
• Replacing a damaged or missing riser cage in compatible HP server models
• Configuring servers for additional storage controllers, NICs, or accelerators
• Data center maintenance and server refurbishment projects

Key specifications

• Brand: HP Enterprise
• Manufacturer part number (MPN): 875056-001-RFB
• EAN: 5706998860941
• Type: PCI riser cage for PCIe riser cards
• Application: Server expansion / add-in card support

How to use

Before installation, power down the server and follow HP Enterprise service manual instructions for the specific server model to access the riser bay. Align the riser cage with mounting points and the backplane connectors, secure it using the original screws or provided fasteners, and insert the PCIe riser card(s) into the cage according to the server’s slot configuration. Reconnect cables and verify that the system BIOS/UEFI recognizes the installed expansion cards after power-up.

Usage recommendations

Verify compatibility with the target HP Enterprise server model using the MPN 875056-001-RFB and consult HP service documentation for torque specifications and ESD precautions. Use manufacturer-recommended screws and replacement parts to maintain warranty and serviceability.