Each wire carries a different voltage.
To provide power to the power supply which in turn powers the motherboard.
The ATX power supply and AT power supply had different connections for the computer motherboard. Also the ATX power supply had provision for some parts of the power supply to be switched on-and-off by the electronics on the motherboard, possibly under the control of software. With an AT power supply it necessary for the user to physically operate a switch. This control feature means that a computer that has an ATX power supply can provide, for example, a "wake-on-LAN" or "wake-on-modem" feature whereby the computer will switch itself on if their a signal on the ethernet cable or modem cable. If necessary it should be possible to adapt an ATX power supply to replace an AT power supply. This could be done by finding an adapter cable. The mother board cable from the ATX power supply would then plug into the adapter cable and the adapter cable would plug into the motherboard.
The purpose of using colored cable ties is to differentiate the different cables being tied. This allows the user to find a particular cable without much fuss.
If you are not doing that much with your desktop a huge power supply is not needed, however for people who use their computer for more than basic things, you will simply need a Motherboard input a Cdrom power cable and a Hard drive cable and you will be fine.
The cable is probably damaged, or the idiot just plugged it in backwards. He should first attempt to plug the cable in upside-right. If that fails, he should then try a different floppy cable.
SATA, or serial advanced technology attachment, connects the motherboard to hard drives and optical drives. This cable is inserted into the SATA slot on the motherboard.
To start, the hard drive cable connects your hard drive to your motherboard. Its really simple.
Many/most motherboards have a separate power connector for the CPU. Check your motherboard's installation instructions to locate the CPU power connector. Then connect the matching power supply cable to the CPU power connector on the motherboard.
Master.
a cable for connecting a floppy drive to the computer motherboard.
ide data cable or sata cable
A PC Main Supply is what gives the computer power to operate, in desktop computers they have to constantly be connected to some type of power outlet. Diagram. Plug socket > Cable > PSU (power supply unit) > Motherboard > power to all components in the computer.