Basically, as stated below, everything about that proto Cube is different, even down to the pillars that hold the faceplate on. There are more differences that similarities, that I can find. The only thing that appears to be the same is the modem card, video riser, and the cabling itself (IDE, VRM/HD power, reset buttons, PCI power, PRAM battery cable). The MOBO, CD drive/bracket, chassis, pillars, front bezel, ethernet, CPU, heat sink, acrylic case, metal housing, speaker, boot rom, and even the Apple symbol is actually metallic paint are different from a stock Cube. It's so different only the form/factor remain somewhat the same as a stock Cube.