I have a Power Mac PC, only it's too heavy and out of the way for me try relocating; it's upstairs and I'm downstairs . Therefore, I'm not able, at this time, to look for what I need to know:

Within Macs (with a tower), where would someone look for the model type/name? (On mine, I know it's imprinted on the front of the tower and also within the HD.)

If someone can give me a step-by-step for locating that info. - for new Mac tower PCs - many thanks!