Dell Precision WorkStation 420 Memory Upgrade Procedure page 9

support.dell.com
      

 +)  
  
 1"
512 MB 256 MB
768 MB 256 MB
1024 MB 256 MB
1024 MB 512 MB
1536 MB 512 MB
2048 MB 512 MB
To upgrade memory, perform the following steps.

  4  $ , + $  $) $  !   

   
, 
    &   $  $ &    5 65 
7  7    !     
1. If you have not already done so, upgrade the BIOS.
See "Upgrading the BIOS" on page 1-1 for instructions.
2. Turn off the computer and peripherals, disconnect them from their electrical out-
lets, and wait 10 to 20 seconds.
3. If you have a mini-tower computer, lay the computer on its right side.
4. Open the computer cover.
5. Install or remove RIMMs as necessary to reach the desired memory total.
NOTE: For instructions on installing RIMMs, see "Installing a RIMM" on page 1-7.
For instructions on removing RIMMs, see "Removing a RIMM" on page 1-8.
6. Install CRIMMs in any RIMM sockets that do not contain RIMMs.
7 . If you have a mini-tower computer, stand the computer upright.
8. Close the computer cover, reconnect the computer and peripherals to their
power sources, and turn them on.
As the system boots, it detects the presence of the new RIMMs and automati-
cally changes the system configuration information in system setup.
NOTES: Adding or removing RIMMs causes the following message to be dis-
played at the next system start-up:
The amount of system memory has changed.
 $( 
,12  1/
256 MB CRIMM
256 MB 128 MB
256 MB 256 MB
512 MB CRIMM
512 MB 256 MB
512 MB 512 MB
System Memory Upgrade
,13
CRIMM
128 MB
256 MB
CRIMM
256 MB
512 MB
1-5