iMac G3 I confirmed it boots using a power cable for a computer that I had at home. After booting it up, there was a crackling sound for a while, but it stopped after about 5 minutes. After that, I watched it for 5 minutes, and the screen flickered momentarily twice with a crackling sound. The CD drive worked without any problems, but I didn't actually try to read a disc. Sound was coming out. Since I don't have any devices to operate it like a keyboard, this is as far as I can confirm its operation. The power cable is not included. The unit only.