ADLINK ReadyBoard 740 - Manual (Page 46)

34 BIOS Setup
USB Mass Storage Device Configuration
This is a submenu for configuring the USB Mass Storage Class
Devices when BIOS finds they are in use on the USB ports.
Emulation Type can be set according to the type of attached
USB mass storage device(s). If set to Auto, USB devices less
than 530MB will be emulated as Floppy and those greater than
530MB will remain as hard drive. The Forced FDD option can
be used to force a hard disk type drive (such as a Zip drive) to
boot as FDD.