Notebook
BIOS Setup
Advanced menu
Advanced Settings
Primary IDE Master/Slave
The two items display the types of the primary master/slave IDE devices
installed in the Notebook. Press [Enter] to bring up a window showing the
detailed information of the device, including the device name, vendor, LBA
mode, PIO mode and more.
Legacy USB Support
If you want to use USB device, like mouse, keyboard, portable disk, in DOS
system or boot your system by USB device, you should enable this function.