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4Ground yourself and install the new memory module:

NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message indicates this failure.

a Align the notch in the module edge connector with the tab in the connector slot.

b Slide the module firmly into the slot at a 45-degree angle, and rotate the module down until it clicks into place. If you do not feel the click, remove the module and reinstall it.

5Replace the cover.

NOTICE: If the memory module cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may damage your computer.

6Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.

7Turn 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, click the Start button, click Help and Support, and then click Computer Information.

Modem and Mini PCI Card

1Complete the instructions in "Before You Begin" on page 77.

2Turn the computer over, loosen the captive screw on the modem/Mini PCI card cover, and lift the cover away from the computer.

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Adding and Replacing Parts

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Dell Inspiron 1150 owner manual Modem and Mini PCI Card