Dell LATITUDE D400 - Manual (Page 42)

NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message
indicates this failure.
4. Replace the cover.
NOTICE: If the cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may damage
your computer.
5. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.
6. Turn on the computer.
As the computer boots, it detects the additional memory and automatically updates the system configuration information.
To confirm the amount of memory installed in the computer:
In the Microsoft® Windows® XP operating system, click the Start button, click Help and Support, and then click
Computer Information.
In Windows 2000, right-click the My Computer icon on your desktop, and then click the General tab.
Installing a Memory Module Under the Keyboard
1. Remove the keyboard .
2. Loosen the two captive screws in the cover labeled "DIMM1."