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

Figure 41. Identifying Connectors on the Expansion Card Riser 3
1. expansion-card slot 6 2. expansion-card slot 7
3. power connector (for GPU cards)
4. If applicable, remove or install an expansion card on the riser.
5. Replace the expansion-card riser.
6. Close the system.
7. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
Installing Expansion-Card Risers
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
1. If applicable, reinstall the expansion card(s) into the expansion card riser.
2. Align the expansion-card riser with the connector and the riser guide pin on the system board.
3. Lower the expansion-card riser into place until the expansion-card riser is fully seated in the connector.
4. Close the system.
5. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
6. Install any device drivers required for the card as described in the documentation for the card.
GPU Card Installation Guidelines
NOTE
: Internal GPU cards are supported on the PowerEdge R720 and not on the PowerEdge R720xd.
NOTE
: Due to the high power consumption of GPUs, the ambient system inlet temperature is restricted to 30 °C to
ensure adequate system cooling when one or more GPU cards are installed in PowerEdge R720. Note that this is
less than the standard environmental specification of 35 °C.
• The PowerEdge R720 must be installed with two processors.
• The processor must be of 115 W or less.
• The processor must use a GPU kit low-profile heat sink.
• Ensure the GPU enablement kit is available.
GPU enablement kit includes:
– Low-profile heat sinks
– System board support brackets
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