Cisco Catalyst IR8140 Heavy Duty Series, Hardware Installation Manual, Page: 18 / 114

Router Hardware Overview: Exterior
The Cisco Catalyst IR8140H router is a modular chassis with four external module slots.
Do not leave module slots unsealed as it can damage the router when exposed to the elements outdoors. You
can use a slot cover when the module is not populated. See
Accessories, on page 11 .
Note
Slot 0 faces downward and is referred to as a super slot as it is the largest slot of the four module slots within
the IR8140H.
The super slot is reserved for the CPU module and is found at the bottom right of the IR8140H. The other
three slots support Universal Interface Modules (UIMs).
Figure 1: IR8140H with Component Labeling
Cisco Catalyst IR8140 Heavy Duty Series Router Hardware Installation Guide
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Router Hardware Description and Specifications
Router Hardware Overview: Exterior