90 Hardware OverviewPC7048PPowerConnect 7048P switches have an internal 1000-watt power supplywhich can support up to 24 ports of PoE. The additional external powersupply (PowerConnect MPS1000) allows all 48 ports of PoE, or 24 ports ofPoE and full redundancy for the switch.PC7048R and PC7048R-RAPowerConnect 7048R and PowerConnect 7048R-RA switches are designed astop-of-rack switches and include two internal, replaceable, AC power suppliesfor redundant or load-sharing operation. Each power supply can provide 300watts and includes hot-swap support. This means you do not need to power-down the switch to remove or replace one power supply while the other powersupply is operating normally. However, it is necessary to remove power fromthe power supply that is being removed or replaced.Ventilation SystemThree fans cool the PowerConnect 7024, PowerConnect 7024F, andPowerConnect 7048. The PowerConnect 7024P and PowerConnect 7048Peach have two fans, with a third fan in the internal power supply. ThePowerConnect 7048R has two hot-swappable fan trays with one fan each.Locator LEDThe back panel includes an LED to help identify the switch within a rack orroom full of switches. From your remote management system, you can set theLED to blink to help you or a local technician identify the physical location ofthe switch. For information about how to enable the switch locator feature,see "Using the Device View Switch Locator Feature" on page 102.CAUTION: Remove the power cable from the modules prior to removing themodule itself. Power must not be connected prior to insertion in the chassis.
