Yamaha CD Recordable/Rewritable Drive CRW2200 - Manual (Page 20)

Setup Procedures
12
3 3 3 3 Touch a metal part of the computer’s chassis or power supply unit to
discharge any static charge that may have built up inside your body.
Alternatively, you can wear an anti-static grounding wrist strap.
You can permanently damage
equipment if you touch it while there is
any static charge in your body.
Discharge any static charge