Hi diy. One problem you will come up against is that there is no standard for the motherboard USB header pinout. If you get it wrong you can quickly wreck the motherboard and/or any USB devices you connect. If the motherboard manual doesn't make it clear which pins perform which function, then your best bet is to get a cheap digital multimeter. Getting the data+ and data- pins mixed up won't cause any damage, but getting the Gnd(0V) and 5V pins connected to the wrong places can cause immediate disaster.