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Main Board Interface List
Item
Reference
Description
Item
Reference
Description
1
J600
12V DC jack input, 2.5mm/5.5mm
16
SIM4200
Nano SIM card slot #1
2
USB3400
UART debug port, UART to USB
19
CON1000
500-pin connector to the Interposer Board
3
J3901
a)
USB Type-A port, only as host
20
J4100
SD card slot
17
USB3900
b)
Micro USB port, sharing DP/DM with USB Type C connector,
adb
/download/host/device
21
SW4404
6-pin switch, boot configuration and CBL
SW1, SDM_WDOG_DISABLE
SW2, SDM_FAST_BOOT_0
SW3, SDM_FAST_BOOT_1
SW4, SDM_FAST_BOOT_2
SW5, SDM_FAST_BOOT_3
SW6, CBL_PWR_N
4
J3900
USB Type-C port,
adb
/download/host/device
22
SW4403
Key, Force USB boot button
5
J3800
HDMI out interface, 2.0
23
SW4401
Key, Volume up button
