Apple iMac G3 (Original) - Manual (Page 7)

7
7 Touch any exposed metal on the logic board/drive assembly.
This helps protect the computer from damage caused by electrostatic discharge.
Touch the metal part of the
logic board/drive assembly.
Important
Always do this before you touch any parts, or install any components, inside the
computer. To avoid generating static electricity, do not walk around the room until you have
completed the installation of the memory or replaced the battery and closed the computer.