http://global.aopen.com/products_download.aspx?sDropDownProd=52i55HMt-HD / Manual / User's Manual / English / 12/15/2010Click on small icon above 1127.6 KB(Icon is a Floppy Disk drive with a Red arrow above it)There is a small window that opens up. Go to the bottom under the Mirror Sites heading.To the right of the country nearest yours click on the blue ftp site.I'm going to choose USA, San Jose, as an example.I click on - ftp://ftp.aopen.comAfter a few seconds the manual downloads. It is still in the small window. Go to the Maximize icon at the top right corner of the window, and click on it.(Next to the Red X)Now hover your mouse cursor down at the Bottom/Middle.The ghosted out Navigation Guide will appear.Go to the far right, and click on the Adobe Reader icon.[When your mouse cursor is above it - Show Adobe Reader toolbar -appears ]Use the Plus ( + ) icon at the top of the file to increase the view size,use the Minus ( - ) icon to decrease the view size.Go to Page 14 - 2.7 Connecting Front Panel CableThe motherboard is shown clocked 90 degrees to the right, from how it actually sits in the computer case.Processor socket to the Top, Ram Memory slots to the Right, white long PCI slot to the bottom;The Front Panel header is to the Top edge, and towards the right.[The front of your computer is the Front Panel.The area of contact pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header ]Situated in the computer case, the Front Panel header is along the top edge. It is parallel to the top edge, and is two rows of contact pins.20 pins. 10 across the Top, 10 across the Bottom.Pins across the Top row are numbered ODD.Pins across the Bottom row are numbered EVEN.Starting on the Right side on the Top row, and going towards the Left;Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19Starting on the Right side on the Bottom row, and going towards the Left;Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.A) Pins 1 and 3 are N/C. Not Connected (White area)B) Pins 7 and 9 are for the HarDDrive activity LED. (Middle two pins in Orange area)C) Pins 13, 15, 17, and 19 are for a Speaker. Internal speaker for the BIOS Beep Codes.Pin 13 is for the Positive ( + ) wire(Gray area)D) Pins 2 and 4 are for a Reset switch, IF a Reset switch is used.(Purple area)E) Pins 12, 14, and 16 are for the Power On LED light.Pins 12, 14, and 16 are used for a Power On LED light that has 3 wires. The LED has dual colors. (Green/Yellow?)For a two wire Power On LED it is Pin 12, and Pin 14.(Green area for all 3 pins)F) Pins 18 and 20 are for the Power On switch.(Pink or Red area)Front USB headers are on Page 15.Front Audio headers are on Page 16.For additional questions please post in a Comment.Regards,joecoolvette