|-
|10 || JTAG_VREF || - || -
|-
|}
=== J18 - boot mode ===
J18 is a 6x1-pin, 2.54mm pitch header, pinstrip connector. The following table reports the connector's pinout:
{| class="wikitable"
|-
!Pin#
!Pin name
!Function
!Notes
|-
|1-2 || Boot || Boot from internal storage or microSD || Select storage device
|-
|3-4 || Reserved || - || Do Not Shortcircuit
|-
|5-6 || Reserved || - || Do Not Shortcircuit
|-
|}