ASROCK 939S56-M Manual page 22

7. SiS964/SiS180 Hot-Plug Utility
NOTE
1. The Hot-Plug support is ONLY applied to Single SATA drive.
2. SiS Hot-Plug Utility only supports Windows 2000 and XP.
3. Usually, each power wire will provide 2 power connectors for HDDs. It
is recommended to connect SATA HDDs to different power wires to
prevent intervention.
4. If you only hot-plug the SATA data cable without unplugging the power
cable, sometimes it will cause the Hot-Plug function fail.
5. Time interval of the two continual hot-plug actions must be over 5 seconds.
How to use SiS964/SiS180 Hot-Plug Utility
1. After installing the SiS RAID driver, the SiS Hot-Plug Utility will be installed
automatically. And this Hot-Plug utility will be resident in the toolbar. You
can click the right button of the mouse on the hot-plug icon and some
selection will be popup. You can click "Exit" to close this resident utility or
let it always be resident in the toolbar.