Atlantis Land A02-F8-2C/M2 - Manual (Page 11)

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♦ Make sure that there is proper heat dissipation from and
adequate ventilation around the Switch. Do not place heavy
objects on the Switch.
Desktop or Shelf Installation
When installing the Switch on a desktop or shelf, the rubber feet
included with the device must be first attached. Attach these
cushioning feet on the bottom at each corner of the device. Allow
enough ventilation space between the device and the objects around it.
Figure 2-1. Gigabit Ethernet Switch installed on a Desktop or Shelf