Dell R720XD owner manual Item

Item	Indicator, Button, or	Icon	Description
	Connector
			the front and 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 iDRAC (if not disabled in F2 iDRAC setup) press
			and hold the button for more than 15 seconds.
4	Video connector		Allows you to connect a VGA display to the system.
5	LCD menu buttons		Allows you to navigate the control panel LCD menu.
6	Information tag		A slide-out label panel which allows you to record system
			information such as Service Tag, NIC, MAC address and
			so on as per your need.

7 LCD panel

8Optical drive (optional)

9Hard drives

Displays system ID, status information, and system error messages. The LCD lights blue during normal system operation. The LCD lights amber when the system needs attention, and the LCD panel displays an error code followed by descriptive text.

NOTE: If the system is connected to a power source and an error is detected, the LCD lights amber regardless of whether the system is turned on or off.

One optional SATA DVD-ROM drive or DVD+/-RW drive.

3.5 inch hard	Up to eight 3.5 inch hot-
drive systems	swappable drives.

2.5 inch hard	Up to sixteen 2.5 inch hot-
drive systems	swappable hard drives.
	NOTE: In systems
	supporting Dell PowerEdge
	Express Flash devices (PCIe
	SSDs), hard-drive slots 0
	through 3 in hard-drive bay
	2 support only PCIe SSDs.
	Hard-drive bay 3 does not
	support any hard drives and
	is installed with a hard-drive
	blank.

10	vFlash media card slot	Allows you to insert a vFlash media card.
11	USB connectors (2)	Allows you to connect USB devices to the system. The
		ports are USB 2.0-compliant.

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