Dell XPS 15Z (L511Z, Mid 2011) - Manual (Page 77)

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Getting Help
Before You Call
NOTE: Have your Express Service Code ready when you call. The code helps Dell’s
automated‑support telephone system direct your call more efficiently. You may also be
asked for your Service Tag.
Locating Your Service Tag
The Service Tag for your computer can be found on a label at the bottom of your computer.
1
1 Service Tag