Dell PowerEdge R420 Systems Owner's Manual

Back-Panel Features And Indicators

Figure 1. Back-Panel Features and Indicators The figure shows back-panel features of the system.

Item	Indicator, Button, or Connector	Description
1	PCIe expansion card slot 1	Allows you to connect one low-profile PCI Express expansion card.
2	vFlash card slot	Allows you to connect the vFlash card.
3	iDRAC port (optional)	Dedicated management port on the iDRAC Ports card.
4	Serial connector	Allows you to connect a serial device to the system.
5	PCIe expansion card slot 2	Allows you to connect a full-height PCI Express expansion card.
6	Video connector	Allows you to connect a VGA display to the system.
7	Ethernet connectors (2)	Integrated 10/100/1000 Mbps NIC connector.
8	USB connectors (2)	Allows you to connect USB devices to the system. The ports are USB 2.0-compliant.
9	System identification connector	Connects the optional system status indicator assembly through the optional cable management arm.
10	System identification button	The identification buttons on the front and back panels can be used to locate a particular system within a rack. When one of these buttons is pressed, the system status indicator on the back flashes until one of the buttons is pressed again. Press to toggle the system ID on and off. If the system stops responding during POST, press and hold the system ID button for more than five seconds to enter BIOS progress mode. To reset the iDRAC (if not disabled in F2 iDRAC setup) press and hold the button for more than 15 seconds.
11	Power supply (PSU1)	350 W and 550 W NOTE: For non-redundant power supply units, there is only one power supply socket.
12	Power supply (PSU2)