The HPE BL460c Gen9 server blade supports NVMe pass-through controllers, which allow direct access to NVMe storage devices from a virtual machine (VM) running on the server blade.

NVMe stands for Non-Volatile Memory Express, which is a protocol used for accessing solid-state drives (SSDs) over a PCI Express (PCIe) bus. NVMe pass-through controllers allow VMs to access NVMe SSDs directly, without going through the hypervisor, which can result in lower latency and higher performance.

To use an NVMe pass-through controller on the BL460c Gen9, you would need to install an NVMe PCIe card on the server blade and then configure the pass-through controller in the server's firmware settings. You would also need to ensure that your operating system and hypervisor support NVMe pass-through.