H3C Technologies H3C S5820X Series Switches - Manual (Page 36)

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CAUTION:
When an optional interface module or SFP/SFP+ module on an S5820X switch is operating, do not stare
into the optical port because the laser light emitted from the optical fiber may hurt your eyes.
Installation tools
• Flat-blade screwdriver
• Phillips screwdriver
• ESD-preventive wrist strap
All these installation tools are user supplied.