My steelseries siberia v2 headset arrived today. I plugged the headphones and mic into my ASUS VH236H monitor which is connected to my PC via HDMI. The headphones receive sound just fine, but the mic does not work. I know it isn't a hardware problem on behalf of the headset because it's brand new and nothing has changed in my audio control panel. Here's a screenshot of my audio control panel currently: http://i.imgur.com/f9RjHV3.png
On page 15 (of the pdf, not the manual itself) of the manual to my monitor you can see the ports it has: http://content.etilize.com/User-Manual/1015465059.pdf
My headphones are plugged into 6 and my mic is plugged into 5.
My motherboard is a Gigabyte X58A-UD3R.