Asus Motherboard P5VD2-MX - Manual (Page 107)

ASUS P5VD2-MX/P5V-VM DH 3-9
Saving the settings and exiting setup
When you have finished, highlight Save & Exit Setup using the up/down
arrow key then press <Enter> to save the current RAID configuration and
exit the JMB363 RAID BOS utility.
A dialogue box appears to confirm the action. Press <Y> to confirm;
otherwise, press <N> to return to the JMB RAID BIOS menu.