Dell Precision M4300 (Mid 2007) - Manual (Page 66)

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Using Cards
NOTICE:
Click the icon (in the taskbar) to select a card and stop it from functioning before you remove it from
the computer. If you do not stop the card in the configuration utility, you could lose data. Do not attempt to eject a
card by pulling its cable, if one is attached.
Press the latch and remove the card or blank. For some latches, you must press the latch twice: once to
pop the latch out, and then a second time to pop the card out.