Here is the for the Dell MIH61R front panel header (JFP1 or similar label):
Do not panic. Shorting the wrong pins can fry your board, but this guide will walk you through the exact pinout, the tools you need, and how to hack the connector to make your PC work. Most modern motherboards follow the Intel Front Panel I/O Connectivity Design Guide. This usually involves a 9-pin or 10-pin rectangular block in the bottom-right corner. The Dell MIH61R does not use this standard. dell mih61r mb front panel pinout
The problem? Dell doesn’t play by the rules. They use a proprietary front panel connector that looks nothing like the standard Intel pinout. Here is the for the Dell MIH61R front
If you are reading this, chances are you are staring at a green Dell motherboard pulled from an OptiPlex 390, 790, 3010, or 7010. The model number stamped on the board is MIH61R (often paired with a CN-0Y2MRG or similar tag). You have a standard PC case sitting next to it, and you are holding a handful of tiny two-pin connectors labeled Power SW , HDD LED , and Reset SW . This usually involves a 9-pin or 10-pin rectangular
We will label pins looking at the motherboard with the PCIe slots facing down and the I/O ports (USB, Ethernet) facing left . The header is keyed; there is a missing pin or a plastic notch.