1

2

1

tab

2

notch

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

3Replace the memory module cover.

4Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.

5Turn 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 Start

→Help and Support→Dell System Information.

Subscriber Identity Module

Subscriber Identity Modules (SIM) identify users uniquely through an International Mobile Subscriber Identity.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTE: Only Cingular and Vodafone need a SIM. Verizon, Sprint, and Telus do not use SIMs.

Adding and Replacing Parts

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Dell PP22X, DT549 owner manual Subscriber Identity Module, 153