Cisco Router 3600 Hardware Installation Manual page 23

Chapter 1 Overview of Cisco 3600 Series Routers
Cisco 3640
The Cisco 3640 router includes these additional features:
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Figure 1-3
Cisco 3660
The Cisco 3660 router includes these additional features:
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OL-2056-05
High-performance 100-MHz RISC processor
Four slots for network modules
Can be installed in a 19-, 23-, or 24-inch rack, or on a desk
Can receive DC power from the Cisco Redundant Power System (RPS)
Front Panel of the Cisco 3640 Router
High-performance 225-MHz RISC processor installed on a removable mainboard tray
Six slots for hot swapping similar network modules
Can be installed in a 19- or 23-inch rack, or on a desk
Dual redundant, hot-swappable power supplies (second power supply is optional)
Hot-swappable fan cage used to cool the chassis
One or two onboard, autosensing, 10/100 Fast Ethernet interfaces
Supports two Advanced Integration Modules (AIMs)
Cisco 3600 Series Routers Hardware Installation Guide
Hardware Features
1-3