.As with most Dells there is a proprietary Front Panel Board and 20 pin or more ribbon cable.
Dell Precision WorkStation T3500 I/O Panel Assembly with USB Audio I/O Control Panel, 29" Internal Audio Cable D/PN X389H, Front Panel Cable D/PN JN454, and Mounting Bracket, Dell M884G, MC532.
LGA 1366 Motherboard DELL Precision T3500. Purchased the system unit, was originally installed Windows 8. purchase explained that there is one point that is not easy when you turn swears on the front panel, probably due to the fact that the housing is not native and does not have that panel. The problem was solved by pressing F1 at startup. And everything is good, but put Ubuntu 14.04 and F1 does not work, after the first time and F2 cease fire. It remains to restart from the button or Ctrl + Alt + Del.
When booting the system provides just such an error:
From the text it is clear that swears by the connection of the front panel, which lights. Opened the system unit and there really is not connected connectors:
The board has a socket connection, and apparently there is only power:
Here is a screen of the board:
How can I disable the notifications so that the operating system has booted?
I have the same question as the original question asked here with the same motherboard (of T3500).
Does this configuration showed in picture really work?
Has any one tried it?
I,ve tried it , it does not work with the picture above ... also its hard to tell which pins the connector is plugged into ..... 17 and 19 or 19 and 21,,,, does anyone know or have a diagram of the 40 pin lay out>???????.... i really dont want to buy the cable and panel . i just want it to turn on and off i dont care about the usb front or the sound .
SpeedFan is correct, you might even Fry your motherboard.
Its better to use Dell original front panel. Its dead cheap also, just 15 $.
i did order just for the fact that , i may never be able to get it going without it... i did discover that its pins 17 and 20......its as if dell wanted to really make it hard for it to work but still it would better to know the official lay out for the boards front side panel