User Guide
Table Of Contents
- Dell PowerEdge R720 and R720xd Owner's Manual
- About Your System
- Using The System Setup and Boot Manager
- Installing System Components
- Recommended Tools
- Front Bezel (Optional)
- Opening And Closing The System
- Inside The System
- Cooling Shroud
- System memory
- Hard Drives
- Removing A 2.5 Inch Hard-Drive Blank
- Installing A 2.5 Inch Hard-Drive Blank
- Removing A 2.5 Inch Hard-Drive Blank (Back)
- Installing A 2.5 Inch Hard-Drive Blank (Back)
- Removing A 3.5 Inch Hard-Drive Blank
- Installing A 3.5 Inch Hard-Drive Blank
- Removing A Hot-Swap Hard Drive
- Installing A Hot-Swap Hard Drive
- Removing A Hard Drive From A Hard-Drive Carrier
- Installing A Hard Drive Into A Hard-Drive Carrier
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- PCIe Card Holder
- Top Cover Lock Latch
- Cable Retention Bracket
- Expansion Cards And Expansion-Card Risers
- Expansion Card Installation Guidelines
- Removing An Expansion Card From The Expansion-Card Riser 2 Or 3
- Installing An Expansion Card Into The Expansion-Card Riser 2 Or 3
- Removing An Expansion Card From The Expansion-Card Riser 1
- Installing An Expansion Card Into The Expansion-Card Riser 1
- Removing Expansion-Card Risers
- Installing Expansion-Card Risers
- GPU Card Installation Guidelines
- Installing A GPU Card
- Removing A GPU Card
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- Network Daughter Card
- Processors
- Power Supplies
- System Battery
- Hard-Drive Backplane
- Control Panel Board
- System Board
- Troubleshooting Your System
- Safety First—For You And Your System
- Troubleshooting System Startup Failure
- Troubleshooting External Connections
- Troubleshooting The Video Subsystem
- Troubleshooting A USB Device
- Troubleshooting A Serial I/O Device
- Troubleshooting A NIC
- Troubleshooting A Wet System
- Troubleshooting A Damaged System
- Troubleshooting The System Battery
- Troubleshooting Power Supplies
- Troubleshooting Cooling Problems
- Troubleshooting Cooling Fans
- Troubleshooting System Memory
- Troubleshooting An Internal USB Key
- Troubleshooting An SD Card
- Troubleshooting An Optical Drive
- Troubleshooting A Tape Backup Unit
- Troubleshooting A Hard Drive
- Troubleshooting A Storage Controller
- Troubleshooting Expansion Cards
- Troubleshooting Processors
- Using System Diagnostics
- Jumpers And Connectors
- Technical Specifications
- System Messages
- Getting Help

Item Indicator, Button, or
Connector
Icon Description
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 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.
8 Optical drive (optional) One optional SATA DVD-ROM drive or DVD+/-RW drive.
9 Hard drives
3.5 inch hard
drive systems
Up to eight 3.5 inch hot-
swappable drives.
2.5 inch hard
drive systems
Up to sixteen 2.5 inch hot-
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.
9