<P>The rack-mount and cable-management kit for the Cisco 3640 consists of rack-mount and cable-management brackets that are designed for mounting your router in 19-inch, 4-post or telco-type equipment racks and for relieving strain on port adapter interface cables that are installed on port adapters in the router. The inlet and exhaust ports for cooling air are located on the right and left of the chassis, respectively, so multiple routers can be stacked in a rack with little or no vertical clearance. The kit is shipped with each Cisco 3640 and is also available as a single FRU.</P>