| 1.2 |  | Routers |
| 1.2.2 |  | Router physical characteristics |

| It is not critical to know the location of the physical components inside the router to understand how to use the router. However in some situations, such as adding memory, it can be very helpful. The exact components used and their location varies between router models. Figure identifies the internal components of a 2600 router. Figure shows some of the external connectors on a 2600 router.
| Interactive Media Activity PhotoZoom: Cisco 1721 Router In this PhotoZoom, the student will view a Cisco 1721 router.
| Interactive Media Activity PhotoZoom: Cisco 2621 Router In this PhotoZoom, the student will view a Cisco 2621 router.
| Web Links Hardware Features http://www.cisco.com/en/US/products/ hw/routers/ps259/roducts_installation_ guide_ chapter09186a008007e034.html#xtocid1