Does xbox 360 Arcade use HDMI? Or do I need a converter?

[D'Artagnan]

also, where can I find a cheap power cable for it?

 

[Zoey]

According to the XBox360 website, it DOES use HDMI

http://www.xbox.com/en-US/hardware/x/xbox360arcadesystem/default.htm

ANY HDMI cable will do the job...get a cheap one!