Dell E19S Use this button only if directed to do so by qualified, Documentation, USB connectors

Item	Indicator, Button, or	Icon	Description
	Connector
			Use this button only if directed to do so by qualified
			support personnel or by the operating system's
			documentation.
3	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 pushed, the LCD panel on
			the front and the system status indicator on the back
			flashes blue until one of the buttons is pushed again.
			Press to toggle the system ID on and off. If the system
			hangs 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 for more than 15 seconds.
4	Video connector		Connects a VGA display to the system.
5	LCD menu buttons		Allows you to navigate the control panel LCD menu.
6	LCD panel		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 AC power and an
			error is detected, the LCD lights amber regardless of
			whether the system is turned on.
7	USB connectors (2)		Allows you to connect USB devices to the system. The
			ports are USB 2.0 compliant.
8	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.
9	Hard drives (8)		• Up to eight 2.5 inch or 3.5 inch hot-swappable hard
			drives.
			• Up to four 2.5 inch or 3.5 inch hot-swappable hard
			drives on software RAID systems.
10	Optical drive (optional)		One optional SATA DVD-ROM drive or DVD+/-RW drive.
			NOTE: DVD devices are data only.

11Dual slot hard-drive blanks

(2)

Hard-drive blanks for the empty hard-drive slots.

NOTE: Dual slot hard-drive blanks are available only on software RAID systems. The blank hard-drive slots are not available for software RAID.

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