Compaq Armada 4100 Reference Manual page 167

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Use conductive field service tools.
Use a portable field service kit with a folding static-dissipating
work mat.
IMPORTANT: If you do not have the suggested equipment for proper
grounding, contact a Compaq authorized reseller or service
provider. For more information on static electricity or assistance
with product installation, contact your Compaq authorized service
provider.
D-2 Electrostatic Discharge