The power requirements might be useful for planning the power distribution system needed to support the switch. Heat dissipation is an important consideration for sizing the air conditioning requirements for an installation. The power and heat associated with a Catalyst 2926 series switch and Catalyst 2926G series switch varies upon the average switching traffic levels. Unless otherwise noted, the information assumes worst-case conditions. Typical numbers are approximately 30 percent below the numbers listed here.
G series switches.
This section also describes connection equipment you will need to connect to network devices. When preparing your site for cabling to the switch, you need to consider several factors for each switch interface type. Before installing the switch, have all cables and any additional interface equipment on hand. The distance and rate limits in the following sections are the IEEE-recommended maximum speeds and distances for signaling. The distance limits in the following sections are provided as guidelines for planning your network connections before installation.