Casio AD-4175
This page was last modified 21:36, 17 January 2021 by Mars2000you. Based on work by Rderooy.


The Casio AD-4175 is an external power supply (PSU), that was supplied with the Casio MX-10, MX-15 and MX-101 MSX computers.

There are a few variations of this adapter with different input voltages, depending on the target region of the MSX. This adapter was also used for some Casio calculators.


Casio AD-4175 detail (100V)
Casio AD-4175
Casio AD-4175 detail (220V)


The connector is a common barrel connector with center negative (dimensions?)

  • Input: AC 100V ~ 50/60Hz 12VA (Japan)
  • Input: AC 220V ~ 50Hz 12VA (Mainland Europe)
  • Output: DC 7V ⎓ 800mA