Dell Inspiron 600m Owner's Manual page 61

Press the device latch release so that the latch release pops out.
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Pull the device by the latch release to remove the device from the
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module bay.
Insert the new device into the bay, push the device until you feel a
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click, and push the device latch release in so that it is flush with the
computer. Windows XP automatically recognizes the new device.
If necessary, enter your password to unlock your computer.
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Using Batteries and Module Bay Devices
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