Microsoft W840DI - Manual (Page 13)

User's Guide Before You Begin
Bottom View
Compartment Door
Woofer
Ventilation Holes
Battery Latch
Two HDD Doors
Battery Pack
Warning:
For better ventilation of heat generated and gathered inside the system unit,
you are advised not to block the ventilation holes. For notebook with
ventilation holes on the system chassis, please avoid putting system unit on
fabric surfaces when it is powered on. Fabric surfaces not only tend to
block the ventilation holes located on the system chassis, fabric threads
(especially from carpets and rugs) would invariably come off and get inside
the system unit which in turn would deteriorate the overall performance of
the system’s ventilation.
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