I/O Slot Expansion Unit - Hitachi Compute Blade 2000 User Manual

I/O slot expansion unit

Clean the vent holes every six month. If the unit is used in a dusty
environment, clean it once a month.
Turn off the power and pull out the power cable before cleaning the I/O slot
expansion unit. If the power is not turned off and the power cable is not pulled out,
the cleaning could cause an electric shock or equipment failure.
 How to clean the ventilation holes
Wipe the ventilation holes as shown in the following figure using a dry cloth, or
vacuum them with the I/O slot expansion unit powered off.
WARNING
To be cleaned.
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