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yea there are 5 lines one is power switch other is reset the power led then hdd led then in older motherboard there is provision for speaker
The power switch is in the front pannel of the motherboard if you have multitester the power which will indicate 5v the power switch is to be conected to the 5v and the ground normally the front pannels details will be given in the motherboard
The hdd red wire gooes to pin #1 the hdd white wire goes to pin #3 the power sw orange wire goes to pin #6 the power sw white wire goes to pin #8 The reset sw blue wire goes to pin #7 the reset sw white wire goes to pin #5 the power led green wire goes to pin #2 the power led white wire goes to pin #4.
Now the layout of the pins is the long row (5) pins are the odd number pins 9 being the odd one and 1 is the other end of the row. 2 through 8 start at the pin accross from 1 : : : : . I hope this helps you.
If your board is the one in this manual, the pins are located very close to the CMOS battery. Page 21 in that manual shows the diagram. Power LED is the top two left pins. Hard disc LED is the bottom two left pins. Power switch is the top two right pins. Reset switch is pins 3-4 on the bottom row. Pin 5 on the bottom is not used.
Pin arrangment is Industry Standard Architecture.....
pwr led pwr sw N/C
X X X X O
X X X X O
hdd rst N/C
translated this is top row left to right ...... power led, power switch no connection
Bottom row is left to right........ hard drive, reset, no connection
Note: not all computer cases have a reset button, also the connectors for power led and hard drive produce a light, if the light does not show, power off the pc swithc the cable rooun 180deg on the connector pins and reconnect.
check your motherboard manual if you do not have it go to www.support.hp.com and look for manuals based on the model. this should give you detailed instructions as to which pins you plug those cables into. usually they are located towards the bottom of the motherboard to the right of your PCI Expansion slots