Top Row (Odd): [ Power LED + ] [ Power LED - ] [ Power Switch ] [ Power Switch ] [ Empty ] (Pin 1) (Pin 3) (Pin 5) (Pin 7) (Pin 9) Bottom Row (Even): [ HDD LED + ] [ HDD LED - ] [ Reset Switch ] [ Reset Switch ] [ Key/No Pin ] (Pin 2) (Pin 4) (Pin 6) (Pin 8) (Pin 10) Use code with caution. Pin-by-Pin Functional Breakdown Pin Number Connector to Attach Wire Polarity Power LED Positive PLED + Positive (+) Pin 3 Power LED Negative PLED - Negative (-) Pin 5 Power Switch PWR_SW / PW No polarity (Ground) Pin 7 Power Switch PWR_SW / PW No polarity (Signal) Pin 2 HDD LED Positive HD_LED + Positive (+) Pin 4 HDD LED Negative HD_LED - Negative (-) Pin 6 Reset Switch RST_SW / RES No polarity (Signal) Pin 8 Reset Switch RST_SW / RES No polarity (Ground) Pin 9 Not Connected Pin 10 Key Pin (Missing) Acts as an orientation guide Understanding Wire Polarity (Positive vs. Negative)
If the computer fails to start or front panel indicators do not work after assembly, check for these common configuration issues:
Follow these steps to connect your front panel cables safely and correctly. Foxconn N15235 Front Panel Connectors - Google
is correctly seated on Pins 6 and 8. If the LEDs don't light up, try flipping those specific connectors around; LEDs are polarity-sensitive, but switches are not. For specific details regarding other onboard headers like , you can refer to archives on or community guides on Spiceworks Are you also looking for the Front Audio USB header locations for this specific board?
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: Crucial . LEDs are diodes and require exact polarity to work. Ensure the positive wire (usually colored or marked with a small + arrow) connects to Pin 2 , and the negative wire (typically white or black) connects to Pin 4 . 5. Connecting the Hard Drive LED (HDD_LED)
Some older Foxconn boards use JFP1 or simply a 9-pin block near the IDE port. is correctly seated on Pins 6 and 8
The front panel header is typically located in the bottom-right corner of the motherboard and is labeled . It consists of two rows of pins: Pin 5 (End) Power Switch Unused/Missing Bottom Row Reset Switch Reserved/NC Power Switch (PWRSW):
For more specific diagrams or to find replacement parts for this classic board, you can check listings on sites like Orange Hardwares or browse tutorials from Corsair's DIY Builder guide .
If you are still stuck, search for "HP Compaq SG3-350UK Service Manual" – that document contains the official OEM schematic for the Foxconn N15235.
Locate the 2-pin connector labeled or IDE LED . This connection is polarity-sensitive; if installed backward, the LED light on the case will not illuminate. Ensure the positive wire (indicated by a + sign, a small triangle on the plastic housing, or a colored wire like red/blue) connects to Pin 1 . Connect the negative wire (usually white or black) to Pin 3 . 4. Connect the Power LED (PLED)