Adding second hardrive

[LeeAnnaSparks]

I have started playing with computers alot and have been doing all of the repairs myself. I am wondering if it is safe to add another hardrive to my PC? And if so,I need to find out how the second hardrive is hooked into the computer.I have never had a computer that had a second hardrive and have never seen how they are plugged in.If anyone has any input or tips I would love any help I can get.:confused:

[thefultonhow]

Welcome to PCMech! This article might help you:

http://www.pcmech.com/show/harddrive/43/

I recently updated it with some of the newer techniques.