CAUTION: Forcing LEGO® to connect over a cable can result in damaging the cable
and light.
Connecting cable connectors to Expansion Boards
Take extra care when inserting connectors to ports of Expansion Boards. Connectors can
be inserted only one way. With the expansion board facing up, look for the soldered “=”
symbol on the left side of the port. The connector side with the wires exposed should be
facing toward the soldered “=” symbol as you insert into the port. If a plug won’t fit easily
into a port connector, do not force it.