PMOD connector¤
The Logic v2 and newer has a PMOD connector, which is a standardized way to connect various peripherials.
Info
The 1.x HW revisions do not have PMOD connector.
Pinout¤
Pinout is visible from the underside of the board as white labels.
Warning
The 5V label is wrong, and it should say VCC
instead - the voltage is configurable, see below.
Voltage setting¤
On the v2.0 HW revision, there are three pinheads to be used to set the voltage on PMOD VCC. They are unfortunatelly without labels, so here are photos of the 3.3 V and 5 V settings: