The video demonstrates how to properly install and secure the USB cable lock on the A-trex system. It explains how to position each cable, place the spacer, and tighten the thumb screw to ensure both USB cables stay firmly locked in place.

Steps
• Identify the two USB cables that need to be secured.
• Insert the shorter USB cable into the top opening of the lock.
• Insert the longer USB cable into the bottom opening.
• Place the spacer over the longer cable.
• Align the holes on the lock and the spacer.
• Insert the thumb screw through the aligned holes.
• Tighten the thumb screw until both cables are securely fixed in place.