IEI Integration PCIE-Q350 v1.00 - Manual (Page 165)

PCIE-Q350 PICMG 1.3 CPU Card
Page 143
Hard Disk Allows the USB device to be emulated as hard disk
responding to INT13h calls that return DL values of
80h or above.
CDROM Assumes the CD-ROM is formatted as bootable
media. All the devices that support block sizes
greater than 512 bytes can only be booted using this
option.
6.4 PCI/PnP
Use the PCI/PnP menu (BIOS Menu 15) to configure advanced PCI and PnP settings.
WARNING:
Setting wrong values for the BIOS selections in the PCIPnP BIOS
menu may cause the system to malfunction.