IEI Integration NANO-LX v1.21 - Manual (Page 130)

NANO-LX EPIC SBC
Page 115
6.5 Integrated Peripherals
Use the Integrated Peripherals menu (BIOS Menu 7) to change the configuration options
for the attached peripheral devices..
BIOS Menu 7: Integrated Peripherals
Drive PIO Mode [Auto]
Use the Drive PIO Mode options below to select the Programmed Input/Output (PIO)
mode for the following HDDs:
Master Drive PIO Mode
Slave Drive PIO Mode
Auto (Default) The computer selects the correct mode.
Mode 0 PIO mode 0 selected with a maximum transfer rate of 3.3MBps.
Mode 1 PIO mode 1 selected with a maximum transfer rate of 5.2MBps.