PURPOSE: To realize a vibration-resistant structure which is required for an exchange device and a refined fixing structure considering that it is exposed to public view in a personal computer, etc., used for a console of an exchange and computers.

CONSTITUTION: A printer main body 5 is contained by a tray 1 which is painted the same color as a personal computer main body and a printer by using light metal, and is fixed by right and left supporters 6, 7 to hold the printer main body 5 from both sides. It is further fixed to a console 4 by providing a desk fixing slit 2. Thereby, all the parts are constituted completely integrally. Furthermore, the device is very easily installed and constituted to be contained readily without stopping its function even after personal computers are installed. It has a refined appearance and a structure which does not seem to be fixed.