A:AnswerAll audio ports have one function. There are 3 lines in the back:
Line In - Allows you to connect an AUX cable from one device to the PC to play device audio to the PC.
Front Speaker Out - Connect a speaker (or headset) to play audio to the connected output.
Mic In - Connect a 3.5mm microphone for audio in.
One port is available on the top in the front which you can customize for any of the 3 ports from the rear.
If you want to use a TRRS jack (3 black rings on the jack) you will need a splitter to separate the mic/audio, or a USB connector to relay the info to the PC via USB.
A:AnswerYes. As long as it falls within the power specifications the Power supply can provide. 500w power supply, 4 ram slots. Looks like a good starter machine without breaking the bank.