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PC Power Connectors
(used inside the pc case)
There are two main power connectors used within the PC. These are used to provide power to a whole range of drives and additional internal peripherals. These include floppy disk drives, hard disk drives, CD/DVD Drives and tape streamers. They use a connector called a Molex for the larger drives and a mini molex for smaller ones , in particular the floppy disk drive.
3.5"
Floppy Disk Drive Connector
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| Pin |
Name |
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Color |
Description |
| 1 |
+5V |
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Red |
+5 VDC |
| 2 |
GND |
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Black |
+5 V Ground |
| 3 |
GND |
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Black |
+12 V Ground
(Same as +5 V Ground) |
| 4 |
+12V |
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Yellow |
+12 VDC |
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4 pin Mini Molex Connector |
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5.25"
Floppy Drive / Hard Disk Drive and Misc Peripheral Connector |
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| Pin |
Name |
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Color |
Description |
| 1 |
+12V |
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Yellow |
+12 VDC |
| 2 |
GND |
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Black |
+12 V Ground
(Same as +5 V Ground) |
| 3 |
GND |
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Black |
+5 V Ground |
| 4 |
+5V |
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Red |
+5 VDC |
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4 Pin Molex
Connector |
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