Intel NSI2U - Manual (Page 13)

Adapters and Peripherals
Revision 1.3 9
 Testing of adapters cards normally is performed with unused add-in adapters
and onboard controller expansion ROMs disabled in BIOS Setup. Intel
recommends that customers disable the option ROM for add-in controllers
and/or the on-board controllers when not booting from the controller or needing
to use its built in utilities.