When installing the LLM-8850 accelerator card on a Raspberry Pi 5, you first need to prepare an M.2 HAT+ expansion board. Refer to the official link.
Disconnect power before installation
Be sure to disconnect the Raspberry Pi 5 power before installing the LLM-8850 Card. Do not install while powered on! Use a switching power supply adapter (non-PD protocol) with DC 5V@3A power supply capability. If a PD power supply adapter is used, it may fail to output the maximum power normally due to protocol compatibility issues, which could further cause abnormal device operation.