LLM‑8850 Card is an M.2 M-KEY 2242 AI acceleration card designed for edge devices, combining a compact 42 mm form factor with the Axera AX8850 SoC delivering 24 TOPS @ INT8 performance. It enables host devices such as Raspberry Pi 5, RK3588 SBCs, and x86 PCs to easily expand multimodal large-model and video analysis capabilities with a simple plug‑and‑play design. The card is equipped with an active cooling system featuring a micro turbine fan and aluminum alloy CNC fins, with fan speed intelligently controlled by the onboard EC based on temperature–current curves. Even under long‑term full load, it can maintain stable low temperatures to prevent thermal degradation inside enclosed cases.
The onboard DCDC + PMIC power chain is managed in real time by the EC to achieve “power on demand, cooling on demand,” greatly improving overall system stability. Supports AXCL Runtime, with C / Python APIs enabling one-click deployment of mainstream CNN, Transformer, LLM, and multimodal models such as YOLO‑v8/11, CLIP, Whisper, Llama3.2, InternVL3, Qwen3; and utilizes the AX8850’s VPU hardware pipeline for H.264/H.265 8K encoding/decoding with simultaneous encode-decode transcoding acceleration and scaling/cropping, bridging AI and video stream processing. Host devices can directly invoke the hardware video codec via ffmpeg.
8 K @ 60 fps H.264/H.265 decoding, supports 16 channels 1080 p parallel decoding, supports scaling / cropping
Memory
64‑bit LPDDR4x, 4266 Mbps, 8GB capacity
Storage
32Mbits QSPI NOR Flash (used for Bootloader only)
Form Factor
M.2 M-KEY 2242, PCIe 2.0 ×2
Cooling
Micro turbo fan + integrated aluminum alloy CNC heatsink, EC intelligent temperature control
Operating Ambient Temperature
0 ~ 60 °C
Full Load Temperature at Room Temp
70 °C
Power Supply
7W @ 3.3V
Product Size
42.6 x 24.0 x 9.7mm
Product Weight
14.7g
Package Size
66.0 x 44.0 x 13.5mm
Gross Weight
19.8g
Learn
Reminder
The device may become hot during operation. Do not touch it to avoid burns.
Power Supply
When connecting to a Raspberry Pi or other PCs, 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.
Device Requirements
Due to insufficient internal interrupt resources of the Raspberry Pi, when using PCIe to convert to 4-channel M.2, M.2 SSDs and LLM-88500 cannot be used simultaneously.