To make the most important motherboard connection first, and that's the power switch. It's normally labeled "PW SW" or "Power SW" and the motherboard will be labeled with "PW SW", "P-ON" "PW" or something similarly cryptic. You won't hurt anything if you attach the power switch to the wrong connector in the block, but you won't get the PC to turn on either. I went ahead and connected the rest of the front panel leads to the motherboard, but you really don't need to. Nobody uses reset switches or keyboard locks anymore, most motherboards have a built in piezoelectric speaker, and who cares about LED's.
Important motherboard connection
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