Question 1

How can this work for PC?

Accepted Answer

You can find adapters to convert it that split the mic and headset into seperate 3.5mm plugs. But unless you plan on buying it for use on both systems I'd advise you to buy a headset that is intended for the PC. Razer Kraken is very affordable I'd suggest a Turtle Beach product but I'm less familiar with them.

Question 2

Is the plug 3.5?

Accepted Answer

No.  This an amplified headset designed to work with the line-level audio output of a game console such as the XBox 360 or PS3.  There is an attached 2.5mm plug which is for XBox game pads to facilitate communications with other players in online multi-player games.

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