IBASE MB839 - Manual (Page 14)

INSTALLATIONS
8 MB839 Series User’s Manual
Jumper & Connector Location on MB839-1C / MB839-4C
JP1: MicroSD Power select
Pin # Signal Name
1 +V1.8V
2 +VSDIO_IN
3 +V3.3V
JP2: BIOS Flash Security Setting
Pin # Signal Name
1 GND
2 I2S_2_TXD
JP3: Clear CMOS Setting
JP2 Setting
Normal
Clear CMOS