HPE P48407-B21 ML350 Gen11 4x8 Secondary Riser Kit
Overview
The P48407-B21 is HPE's 4x8 secondary riser kit for the ProLiant ML350 Gen11 tower server, purpose-built to expand PCIe expansion capacity when the base riser configuration runs out of slots. If you're deploying the ML350 Gen11 as an edge compute node, local NVR host, or workstation-class server and need to seat additional HBAs, capture cards, or network adapters beyond what the primary riser supports, this kit provides the physical slot infrastructure to do it. At 5.85 lb and 18.00 x 15.00 x 10.00 in, it ships as a discrete assembly — plan rack or staging space accordingly during installation.
Compatibility
Designed exclusively for the HPE ProLiant ML350 Gen11 tower server platform. This riser kit is generation-specific — it is not interchangeable with ML350 Gen10 or Gen10 Plus risers, and it does not fit HPE DL-series rack servers. Verify your ML350 Gen11 chassis revision and existing riser configuration before ordering; HPE ML350 Gen11 configurations may ship with a primary riser already installed, and slot availability depends on which primary riser variant is present. Consult the ML350 Gen11 QuickSpecs to confirm secondary riser slot count and PCIe lane allocation before committing to a card lineup. For related network expansion components or HPE server accessories, confirm Gen11 platform compatibility at the system level.
