ASROCK ALIVENF7G-FULLHD User Manual page 230

NOTE.
The current RAID driver does not support Hot Plug function. Please do not
insert or remove your SATA / SATAII HDDs while the system is power on and in
working condition. As soon as the RAID driver with Hot Plug function is ready,
we will upload it to our website. Please visit our website for RAID driver update
in the near future.
ASRock website: http://www.asrock.com