The Kenton D-Sync is an active unit. It comes with an external power supply.
Even though MIDI and DIN-Sync protocols use the same connector format, the pin-assignment differs. This means that it is not possible to transmit DIN-Sync signals via conventional MIDI cables. All-purpose cables can be found here:
MIDI DIN input and output
Din Sync input and output
USB port for connecting a 5 V DC power supply