Dell R 420 Manual

Installing The Optical Drive In Hot-Swappable Hard-Drive Systems
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 installed, remove the front...

Figure 27. Removing and Installing the Optical Drive (Cabled Hard-Drive Systems)
1.data cable
2.power cable
3.optical drive
4.release latch
5.metal standoffs (4)
6.notches (2)
Installing The Optical Drive In Cabled Hard-Drive Systems
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...

3.Open the system.
4.Align the two notches on the metal standoffs with the slots on the side of the optical drive.
5.Slide the optical drive into the notches until it is seated firmly and the release latch snaps into place.
6.Connect the power cable.
7.Connect the data cable to the back of the drive and to the SATA connector on the system board.
NOTE: Route and secure the cables using the cable routing latch on the system chassis to prevent them from 
being pinched or crimped.
8.Close the system.
9.If...

Figure 28. Removing and Installing a Cooling Fan
1.cooling fan
2.power cable connector
3.cooling-fan bracket
Installing A Cooling Fan
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...

Internal USB Memory Key (Optional)
An optional USB memory key installed inside your system can be used as a boot device, security key, or mass storage device. The USB connector must be enabled by the 
Internal USB Port option in the Integrated Devices screen of the 
System Setup.
To boot from the USB memory key, configure the USB memory key with a boot image and then specify the USB memory  key in the boot sequence in the System Setup.
NOTE: The internal USB connector (INT_USB) is located on...

Expansion Card Installation Guidelines
Your system supports PCI Express Generation 2 and Generation 3 expansion cards.
NOTE: If you install a second processor, you must upgrade expansion card riser 1 to optimize PCIe slot 1 speed.
The following table provides the riser configurations for single- and dual-processor systems:
Table 3. Riser Configuration for Single- and Dual-Processor SystemsNumber of ProcessorsExpansion Card ConnectorRiser 1Riser 2OnePCIE_G2_X4
iDRAC_EnterprisePCIE_G3_X16TwoPCIE_G3_X16...

Removing An Expansion Card
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.Turn off the system, including any attached peripherals, and disconnect the...

Figure 31. Removing and Installing the Expansion Card from Expansion-Card Riser 2
1.expansion-card riser 2
2.expansion-card riser touch points (2)
3.expansion-card latch
4.expansion card
5.expansion-card holder
Installing An Expansion Card
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...

NOTE: Ensure that the expansion card bracket is attached properly to the chassis, so that expansion-card 
latch can be inserted back to chassis.
9.If applicable, connect cables to the expansion card.
10.Close the system.
11.Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
12.Install any device drivers required for the card as described in the documentation for the card.
Removing Expansion-Card Risers 1 And 2
CAUTION: Many repairs may only be done...

Figure 33. Removing and Installing the Expansion-Card Riser 2
1.chassis intrusion switch
2.expansion-card riser touch points
3.expansion-card riser 2
4.expansion-card riser 2 connector
5.riser guides (2)
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 1 And 2
CAUTION: Many repairs may only be done by a certified service technician. You should only perform...