First open the printer door with the key provided:
Behind the door there are two screws holding the back cover (depends on ticket dispenser type).
Remove the screws also on the back, at the bottom of the device:
Also remove the bottom cover:
After that you can lift off the back cover:
TM07 (or similar):
Depending on the ticket dispenser type, the device might have a plate, holding power and UTP connectors,
By default the cables can be connected from the ground through the hole in the middle of the stand's bottom.
However in case you'd like to connect the ticket dispenser from the back, you'll need to rotate this plate. Unplug the UTP connector and remove the holding crews:
After turned backwards, fix it with the screws and reconnect the UTP cable.
The back cover is perforated at the position of the connectors. Since the cover made of thick metal, the easiest to brake the perforation with quite strong hit on a screwdriver, positioned on the hole-covering part. After placing back the cover, you'll have access to the connectors of the ticket dispenser: