M-AUDIO Thru 1x4 - Manual (Page 3)

Out of the instrument or sequencer you are
"Thruing." Next, connect each of Thru 1x4's MIDI
OUTs to the various instrument's MIDI Ins. All of
Thru 1x4's MIDI OUTs are identical so it doesn't
matter which MIDI OUT is connected to which MIDI
In.
Thru 1x4 is designed to consume almost no power.
However, very, very, rarely you may encounter some
older MIDI device which requires more power than
Thru 1x4 can deliver. This can only happen if the
Thru 1x4
™
POWER MIDI IN +9VDC
1 IN/4 OUT MIDI THRU BOX
MIDI OUT
1 2 3 4
(Optional)
Thru 1x4 Hook-Up Diagram
From MIDI Out of Master Keyboard or Sequencer
To Various Instrument's MIDI Ins