A technician is rebuilding a desktop PC that still uses an older PATA hard drive and a DVD-RW drive. Which 4-pin power connector from the power supply should be plugged into each of these devices to provide +12 V and +5 V?
The 4-pin peripheral ("Molex") connector supplies +12 V on the yellow wire and +5 V on the red wire, with two black grounds. It was the standard power plug for PATA hard drives, optical drives, and some case fans. A 15-pin SATA power connector is used on SATA devices, the small 4-pin Berg connector powers floppy drives, and the 24-pin ATX connector powers the motherboard-none of these are appropriate for PATA or IDE optical drives.
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What is a PATA hard drive, and how is it different from SATA?
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What is the purpose of the Molex connector, and why is it used in older hardware?
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Why does the SATA power connector have 15 pins, and what are the advantages over the Molex connector?
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CompTIA A+ 220-1101 (V14)
Hardware and Network Troubleshooting
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