PC info
You use this information at Your own risk
Standard colors for power supply
| Color |
Description |
| Black |
ground, GND, COM |
| Orange |
+3,3 V |
| Red |
+5 V |
| Yellow |
+12 V |
| Pink |
+5 V Stand-by |
| Blue |
-12 V |
| White |
-5 V |
| Green |
Switch on |
| Grey |
Power Good (PWR_OK, +5±1 V) |
BIOS Sounds
| Beeps |
Description |
| Standard Original IBM POST Error Codes |
|
| 1 short beep |
Normal POST - system is ok |
| 2 short beeps |
POST Error - error code shown on screen |
| No beep |
Power supply or system board problem |
| Continuous beep |
Power supply, system board, or keyboard problem |
| Repeating short beeps |
Power supply or system board problem |
| 1 long, 1 short beep |
System board problem |
| 1 long, 2 short beeps |
Display adapter problem (MDA, CGA) |
| 1 long, 3 short beeps |
Enhanced Graphics Adapter (EGA) |
| 3 long beeps |
3270 keyboard card |
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