Reset switch access holeIf the operating system locks up and does not respond to the power button, you can restart the computer using the reset switch. To do so, straighten a paper clip and press itinto the reset switch access hole for about one second.SpeakerYou can increase the volume on your integrated stereo speakers or external speakers by pressing and decrease speaker volume by pressing .Battery bay latchSlide the battery bay latch to the unlock position, causing the battery to pop up slightly on one side. While keeping the latch in the unlock position, pivot the battery up andout of the bay. Release the latch.Battery charge gaugeTo check the charge level, press the battery test button. The appropriate number of indicators lights up for a few seconds to indicate the amount of charge remaining in thebattery.BatteryThe computer is shipped with a partially charged battery in the battery bay. Dell recommends that you connect an AC adapter to the computer and fully charge the battery assoon as possible after you unpack the computer.1 Docking connector (not supported) 6 Speaker2 Reset switch access hole 7 Battery bay latch3 Microphone (MIC IN) jack 8 Battery charge gauge4 Speakers and headphones (line-out/speaker-out) jack 9 Battery5 USB port connector 10 Hard-disk driveNOTE: Certain audio utilities installed on your computer also allow you to control speaker volume.