To use this AVID SYNC HD Master Clock, first connect it to your system following the basic connection rules. Make sure all cables are securely plugged in. When you power it on, wait for a short while until it stabilizes. It's important to keep it in a dry and clean place, away from strong magnetic fields. Regularly check the connections to ensure everything is working well. If you notice any abnormal noises or malfunctions, stop using it immediately and contact customer support.