Boot from external BIOS

MB-COME10-1 and MB-COME6-1

X23
SM Bus CLK 1 2 I2C Bus CLK
SM Bus DAT 3 4 I2C Bus DAT
SM Bus Alert 5 6 3V3
BIOS_DIS0# 7 8 GND
BIOS_DIS1# 9 10 GND

If there is no Jumper present on the BIOS_DIS1# or BOOT_SEL2_1V8# signal the module will load its BIOS from the internal SPI flash.
If there is a Jumper on the BIOS_DIS1# or BOOT_SEL2_1V8# signal (between signal and GND) the module loads its BIOS from the flash in the SPI socket of the carrier board.