C O M E x p r e s s M o d u l e N a n o C O M - U 1 5Chapter 2 Quick Installation Guide 2 - 22.1 Safety PrecautionsAlways completely disconnect the power cordfrom your board whenever you are working onit. Do not make connections while the power ison, because a sudden rush of power candamage sensitive electronic components.Always ground yourself to remove any staticcharge before touching the board. Modernelectronic devices are very sensitive to staticelectric charges. Use a grounding wrist strap atall times. Place all electronic components on astatic-dissipative surface or in a static-shieldedbag when they are not in the chassis