18 Options Guide BX920 S2
Safety instructions
Modules with Electrostatic-Sensitive Devices
Modules with electrostatic-sensitive devices are identified by the following 
sticker:
Figure 1: ESD label
When you handle components fitted with ESDs, you must always observe the 
following points:
● Switch off the system and remove the power plugs from the power outlets 
before installing or removing components with ESDs.
● You must always discharge static build-up (e.g. by touching a grounded 
object) before working with such components.
● Any devices or tools that are used must be free of electrostatic charge.
● Wear a suitable grounding cable that connects you to the external chassis 
of the system unit.
● Always hold components with ESDs at the edges or at the points marked 
green (touch points).
● Do not touch any connectors or conduction paths on an ESD.
● Place all the components on a pad which is free of electrostatic charge.
I For a detailed description of how to handle ESD components, see the 
relevant European or international standards (EN 61340-5-1, 
ANSI/ESD S20.20).