Ever wanted a full sized USB 2.0 port on your X98 Pro? I know I have, well forum member Idris has done just that. There is a spare USB header on the motherboard, which with a bit of soldering skill means you can wire up a USB pen drive internally or like what Idris has done add a female USB 2.0 connector.
It also powers an external hard drive, so not bad. Handy for those that really must have a full sized port and are good at mods such as this one.
More details in the X98 Pro USB mod thread.