The Dell MIH61R motherboard (found in the Inspiron 620 and Vostro 260/260S) uses a proprietary front panel header that differs from the standard consumer layout. If you are migrating this motherboard to a non-Dell case, you will need to map the individual pins for the power switch and LEDs manually. MIH61R Front Panel Pinout (Standard Mapping)
Here is the verified pinout for the Dell MIH61R front panel header (JFP1 or similar label): dell mih61r mb front panel pinout
polarity-sensitive. If your LEDs don't light up, flip the connector 180 degrees. Reset Switch: The Dell MIH61R motherboard (found in the Inspiron
Some versions of the MIH61R board include a secondary 5-pin header labeled Front USB headers (USB1 / USB2)
If you are moving this motherboard to a standard aftermarket PC case, you will encounter two main "errors" on boot: Front Panel/USB Error: