If an old device works, it is not necessarily safe
Sometimes it can seem that any (even old) device that is functional is suitable for the job. However, this assumption is often wrong.
List of all audiovisual services
Automated recordings from classrooms
Live streaming classrooms
User created videos
Storing and sharing AV recordings
Professional AV recordings
AV recording in the recording studio
Preparation, recording and processing of educational videos
Professional streaming
Rental of AV equipment
User training (AV recordings)