Waveshare PCIe To M.2 Adapter for Raspberry Pi 5, HAT+ Standard, NVMe SSD

Building to the HAT+ standard means this adapter mounts and registers correctly on a Pi 5 following the board's current official attachment convention, which matters for compatibility with other HAT+ accessories that expect to stack in a standard way. Functionally, it does the same job as other PCIe-to-M.2 adapters in Waveshare's range - routing the Pi 5's PCIe lane to a standard M.2 NVMe slot for genuine solid-state storage expansion - but the HAT+ compliance is specifically worth having for anyone building a stack of multiple official-standard add-ons rather than a single standalone adapter.