I found a site:: http://www.hardware.info/productdb/bGRkaZiTmJfK/viewproduct/Corsair_TX750W/ that measured the shortest wire to be 24" (or 60 cm) to 35" so good news! I can run the cable behind the tray without getting extension or solder. if i am wrong, i found some good 6$ extensions on newegg. Since i will be using an antec p180, i might turn this to a small case mod project log. Thanks guys for your help =]