Dell PowerEdge R900 - Manual (Page 86)

86 Installing System Components
Configuring the Boot Device
NOTE: System boot is not supported from an external device attached to a SAS or
SCSI adapter. See support.dell.com for the latest support information about booting
from external devices.
If you plan to boot the system from a hard drive, the drive must be attached
to the primary (or boot) controller. The device that the system boots from is
determined by the boot order specified in the System Setup program.
The System Setup program provides options that the system uses to scan for
installed boot devices. See "Using the System Setup Program" on page 41 for
information about the System Setup program.
PCI Express Add-in Cards
NOTICE: The server must be powered down to install or remove a card from a PCI
Express slot.
CAUTION: Expansion slot covers must be installed over all vacant slots to
maintain the electromagnetic emission characteristics of the server and to ensure
proper system cooling.
Installing a PCI Express 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.
To install a expansion card, perform the following steps:
1 Remove power from the system and attached peripherals, and then
disconnect the system from the electrical outlet.
2 Open the system. See "Removing the Top Cover" on page 60.
3 Open the plastic expansion-card retainer above the filler bracket of the
empty slot. See Figure 3-14.