3.5"-SBC-APL V2.0 - User Guide, Rev. 2.2
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7.17.
Switches and Jumpers
The product has several jumpers which must be properly configured to ensure correct operation.
Figure 30: Jumper Connector
For a three-pin jumper (see Figure 35), the jumper setting is designated “1-2” when the jumper connects pins 1 and 2.
The jumper setting is designated “2-3” when pins 2 and 3 are connected and so on. You will see that one of the lines
surrounding a jumper pin is thick, which indicates pin No.1.
To move a jumper from one position to another, use needle-nose pliers or tweezers to pull the pin cap off the pins
and move it to the desired position.
7.17.1.
SIM Card Selection (JP1)
The "SIM Card Selection" jumper (JP1) can be used to select an expansion interface to connect to the SIM interface.
The jumper has one position: Pin 1-2. More information on setting the "SIM Card Selection" jumper can be found in the
following table.
Figure 31: SIM Card Selection (JP1)
Table 45: Pin Assignment JP1
Jumper Position
Description
Pin 1-2
X
MPCIE (default)
-
M.2 Key B
“X” = Jumper set (short) and “-” = jumper not set (open)
7.17.2.
Backlight Enable Selection (JP2)
Figure 32: Backlight Enable Selection JP2
