HPE ProLiant DL345 Gen10 Plus x16 Secondary Riser Kit

The HPE P38641-B21 is the official x16 Secondary Riser Kit for the ProLiant DL345 Gen10 Plus server. It adds an extra PCIe expansion slot so you can install a high-performance network adapter, graphics accelerator, or storage controller without replacing your existing hardware.

Because the kit is engineered specifically for the DL345 Gen10 Plus chassis, it drops into the designated riser bay with no tools beyond what you already use for standard server maintenance. Clearance, airflow, and power delivery line up perfectly, which helps you keep the server’s thermal profile and energy efficiency right where HPE designed them.

IT teams that are scaling virtual machines, supporting GPU-assisted analytics, or adding faster network paths will appreciate the flexibility this single component provides. Data centers, edge deployments, and lab environments all benefit from the additional bandwidth that a full-length x16 slot delivers, especially when rack space is tight and every server needs to do more.

• Factory-matched secondary riser card for the HPE ProLiant DL345 Gen10 Plus
• Adds one full-length, x16 PCIe slot for extra adapters or accelerators
• Fits cleanly within the server’s existing power and cooling envelope
• Physical size measures 8.8 by 10 by 2.6 inches
• Weight is only 8.82 ounces, which keeps overall system mass low
• Ideal for teams that need more I/O capacity without a full server refresh