im building my pc as i type this. i have an msi kt4 ultra and i bought the chieftec server tower with acrylic window and 450 w power supply from newegg. ive ogt most of the easy wires hooked up (mostly the led ones) but theres a fat cord with a couple ground wires and a couple with very small volt numbers on them. i have no idea what to do with them.
More aboutneed ground wires
That is probably your cable for the front USB ports. If your motherboard has header pins for more USB connections the booklet would say where the ground and + and - connections would be.