Xbox 360s av cable on the original xbox 360?

I have an xbox 360 and wanted to connect it to an old tube TV. In the back there's a connection for av. I wanted to ask whether this av cable for the 360s would also fit the original 360 or whether the two connections are different. I just can't give it a try.

Yes, the AV connection on the 360 Fat is the same as that of the 360 Slim. Only the 360 E has NO AV connection, only one for HDMI. So… Yes you can connect the AV cable of a 360S to the 360 Fat.