Multiple Flash - Nikon Speedlight Instruction Manual

M U L TIP LE FL AS H
As many as three speedlight units may be connected
in series and fired at the same time. One unit is
connected to the camera: a second unit is connected
to the first with the Extension Cord SE-2, an optional
accessory, linking the extension socket on the first to
the synchro socket on the second; and a third unit is
connected to the second unit with an additional SE-2.
Note: Extension flash is not possible when using the ringlight
u n i t s .
E x t e n s i o n C o r d S E - 2