The verdict

Plex
Nvidia Tesla M40 transcodes video; Hailo Hailo-10H (M.2) is detection-only (no transcode).
Frigate
Hailo Hailo-10H (M.2) handles more cameras (~48 vs ~25).
Local AI
Nvidia Tesla M40 has 24GB VRAM (up to ~33B (Q4)); the other has none - not for LLMs.
Fit
Hailo Hailo-10H (M.2) is easier to add to a mini-PC (M.2, needs a spare slot).

Which wins for each job

Job Hailo Hailo-10H (M.2) Nvidia Tesla M40
Plex transcode none ~12 streams win
Frigate NVR ~48 cameras win ~25 cameras
Local LLM none 24GB VRAM win
Fits a mini-PC M.2, needs a spare slot win full-size PCIe, DIY build

Approximate - capacity estimates from curated specs, the same logic as the recommender. Verify against your exact setup. Prices move; check the retailer.

Full specs

Spec Hailo Hailo-10H (M.2) Nvidia Tesla M40
Price (list) $120 $120
Type npu gpu
Interface m2-ae pcie
Transcode - H.264/HEVC (NVENC Maxwell)
Frigate detector Hailo TensorRT
TOPS 40 -
VRAM (GB) - 24
Low profile no no
GPU sharing - vgpu (unlock)
Power (W) 4 250