Removing Memory; Tower Computer Drives - Dell Precision 390 User Manual

The computer should have changed the value of System Memory to reflect the newly installed memory. Verify the new total. If it is correct, skip to
step 10.
9. If the memory total is incorrect, turn off and disconnect your computer and devices from their electrical outlets, remove the computer cover (see
Removing the Computer Cover), and check the installed memory modules to ensure that they are seated properly in their sockets. Then repeat steps 6,
7, and 8.
10. When the System Memory total is correct, press <Esc> to exit system setup.
11. Run the Dell Diagnostics (see

Removing Memory

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer.
1. Follow the procedures in Before You
2. Remove the computer cover (see
3. Press out the securing clip at each end of the memory module connector.
4. Grasp the module and pull up.
If the module is difficult to remove, gently ease the module back and forth to remove it from the connector.
Drives

Tower Computer Drives

Possible fully-populated computer configurations:
Four serial ATA (SATA) hard drives, one optical drive, and one floppy drive or one Media Card Reader
l
Three (SAS or SATA) hard drives, one optical drive, and one floppy drive or one Media Card Reader
l
One or two (SAS or SATA) hard drives with up to two optical drives and one floppy drive or one Media Card Reader
l
1 upper 5.25-inch drive bay
(holds CD/DVD drive)
Dell Diagnostics) to verify that the memory modules are operating properly.
Begin.
Removing the Computer Cover).
2 lower 5.25-inch drive bay 3* additional fan space
(holds optional CD/DVD
drive or optional fourth