Front panel microphone input signal (biased when supporting stereo microphone)
Ground used by analog
Microphone power / additional MIC input for stereo microphone support
Ground used by analog audio circuits
Right channel audio signal to front panel (headphone drive capable)
Right channel audio signal return from front panel (when headphones unplugged)
Filtered +5 V used by analog audio circuits
Left channel audio signal to front panel (headphone drive capable)
Left channel audio signal return from front panel (when headphones unplugged)
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Ok, first of all before installing the ram, you want to make sure the ram you are installing into your computer if the motherboard support the type of ram chip you are installing it in. For your model it is ddr184 pin After this, you can take out your case panel which is the left side by unscrewing the 2 screws in the backside of the panel. Carefully take the panel apart from the computer and set it aside. What you want to located is the RAM slot on your motherboard which typically is 2 slot next to the cpu which has the big fan. Most likely one of the slot or both of the slot is already accompanied by the old memory chip. There are two hinges one on each side, bottom and top. Push these pins down and it would loosen up the memory chip that is already installed on. Replace the new memory chip and make sure you align the golden tooth pins extacly to the memory socket and then push down on the chip until it clicks. Test your computer if it works, if not. You computer may not support the memory chip.