http://www.pcchips.com.tw/PCCWebSite/Downloads/ProductsDetail_Download.aspx?CategoryID=1&Typeid=4&detailid=203&DetailName=MANUAL&DetailDesc=M810DLU%28V5.2a%29&MenuID=39&LanID=0Manual.Click on the country name nearest yours.Opening 810ds52a.zip comes up on the right in a small window.Make sure the circle to the left of Save File has a green dot in it.If not, left-click in the circle to the left of Save File.Now click on OK.A small window comes up on the left. Double-click right on the file name 810ds52a.zipIn the next small window go to the left side, and click on Extract all files.Click on Next, Next, and Finish.Close the other two small windows, and keep the recent one.DOUBLE-click right on -> 810Ds52a(Microsoft Word 97-2003 Docu...1,353 KB)As it is a Microsoft Word document, it takes a few seconds for Microsoft Word to load, and the motherboard manual.[If you don't have Microsoft Office, you can always use OpenOffice for free. MUCH better program than MS Office ]Page 10 - Mainboard ComponentsSW1 is the Front Panel header. It is in-between the CMOS battery, and the Floppy Drive cable connector.Motherboard installed in computer case, SW1 is parallel to the bottom edge of the motherboard, and has two rows of pins.4 pins across the Top row, 5 pins across the Bottom row.Pin 1 is on the Bottom row, and is all the way to the Left.The pins on the Top row are numbered EVEN.The pins on the Bottom row are numbered ODD.Starting on the LEFT side going towards the Right, Top row;Pins 2, 4, 6, and 8. There is NO pin 10.Starting on the LEFT side going towards the Right, Bottom row;Pins 1, 3, 5, 7, and 9.Page 15 - 2: Mainboard InstallationA) Pins 1 and 3 are for the HarDDrive activity LED (Light)Pin 1 is for the Positive ( + ) wire.If the HDD LED is dim when the harddrive is active, switch the wires around.B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.C) Pin 9 is reserved for the factory, and N/C. Not Connected.D) Pins 2 and 4 are for the Power On LED (Light)Pin 2 is for the Positive ( + ) wire.If the PWR LED is dim when the computer is on, switch the wires around.E) Pins 6 and 8 are for the Power On switch.F) No Pin 10.For additional questions please post in a Comment.Regards,joecoolvette