Close-up M1 Chip Video:    • Apple M1 Chip Close-Up / Mac Mini Log...  
M1/Logic Board Photos: https://flic.kr/s/aHsmSeKYj6

Teardown/disassembly on the new M1 Mac Mini released late 2020.
M1 Mac Mini: https://amzn.to/3pDVTL1
Compatible tool kit: https://amzn.to/3lKwehA
Even though this tool kit is for the 2018 Mac Mini, it is compatible with the new M1 Mac Mini and Intel-based Mac Mini's.

3.5mm audio jack is for audio out only. You will need to use a USB mic or dongle for a 3.5mm microphone.