IEI Integration NANO-9452 v4.01 - Manual (Page 152)

NANO-9452 EPIC Motherboard
Page 134
BIOS Menu 17: Boot Device Priority Settings
6.5.3 Hard Disk Drives
Use the Hard Disk Drives menu to specify the boot sequence of the available HDDs.
When the menu is opened, the HDDs connected to the system are listed as shown below:
 1st Drive [HDD: PM-(part number)]
 2nd Drive [HDD: PS-(part number)]
 3rd Drive [HDD: SM-(part number)]
 4th Drive [HDD: SM-(part number)]