S-Video AV Cable for Xbox 360
Yes, this was used for the Xbox 360 'Arcade' model.
I have not tried that, but I do not believe so.
I would say no. I haven't tried to combine them but I would still say no. The cable is for a first generation Xbox 360, so it isn't compatible with much more than that.
I believe it does. I bought this item for my daughter's white Xbox 360 Arcade edition. She has a newer 500 GB Xbox 360 that uses a different one.