Sony PCV-RS300C - Vaio Desktop Computer, Быстрый старт

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Connecting the Keyboard and Mouse
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To use an optical mouse
An optical mouse requires an ideal surface texture in order to provide precision
pointing and tracking.
❑
Use surfaces such as plain paper, card stock, or fabric that have minimal
repetitive patterning.
❑ Avoid surfaces such as mirrors, smooth glass, or magazines that have half-
tone printing.