List three basic types of cables found inside a computer case and what are their functions?

Power Cables: These are the cables that run from your PSU (Power Supply Unit) and attach to various devices in your computer, including but not limited to: the Motherboard, Hard Drive(s), Optical (CD/DVD/Blu-Ray) Drive(s), Fans, etc SATA (Serial ATA) Cables: This cable attaches to either an Optical Drive, Hard Drive, or a SATA External Port to provide a connection between the device and the motherboard and provides for the transfer of information. IDE/ATA Cables: The Predecessor to the SATA cables. They are still seen, but are fast becoming a legacy item. They provide a connection between Floppy Drive(s), Optical Drive(s), or Hard Drive(s) and the motherboard in the same fashion that a SATA Cable would, but provide a much slower speed and capacity than a SATA cable would.