Dell Dimension XPS R Series Service Manual page 46

4-2 Dell Dimension XPS R xxx Systems Service Manual
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cover release
latches (2)
chassis foot
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The desktop system sits flat on the work surface. The rest of the proce-
dures are the same.
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NOTE: The thumbscrew is captive and should be retained in the cover
when loosened.
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Brace the chassis to prevent it from moving while you push inward on the
cover release latch.
cover-mounting thumbscrew