An image capturing apparatus comprising a first mount configured to allow coupling to a second mount included in an accessory (200, 400, 500), the accessory being mountable on and dismountable from the image capturing apparatus by rotating relatively a plurality of first claws of the accessory (200, 400, 500) and a plurality of second claws of the image capturing apparatus, wherein the first mount includes a plurality of terminals disposed in a circumferential direction of the first mount and configured to be used in electrical connection, and a terminal holder configured to hold the plurality of terminals, the terminal holder has a height level difference for holding the plurality of terminals at different positions in a center-axis direction of the first mount on a first stage and a second stage, characterized in that the plurality of terminals include a first terminal configured to be used in communication at a first voltage level and a second terminal configured to be used in communication at a second voltage level lower than the first voltage level, the first terminal and the second terminal being disposed on the same stage of the terminal holder, the second terminal is a terminal electrically connected to a ground level via a first resistor indicating a first resistance between the second terminal and an interface circuit for communication, the first terminal is disposed adjacent to the second terminal of the plurality of terminals, and connected to a power supply via a second resistor indicating a second resistance, the power supply performing output at the first voltage level (Vs), and the first resistance of the first resistor and the second resistance of the second resistor are set so that, in a case of an electrical short circuit between the first terminal and the second terminal, a voltage level of a voltage applied to the second terminal is lower than a rated voltage of the second terminal. the first mount includes a plurality of terminals disposed in a circumferential direction of the first mount and configured to be used in electrical connection, and a terminal holder configured to hold the plurality of terminals, a plurality of terminals disposed in a circumferential direction of the first mount and configured to be used in electrical connection, and a terminal holder configured to hold the plurality of terminals, the terminal holder has a height level difference for holding the plurality of terminals at different positions in a center-axis direction of the first mount on a first stage and a second stage, characterized in that the plurality of terminals include a first terminal configured to be used in communication at a first voltage level and a second terminal configured to be used in communication at a second voltage level lower than the first voltage level, the first terminal and the second terminal being disposed on the same stage of the terminal holder, the second terminal is a terminal electrically connected to a ground level via a first resistor indicating a first resistance between the second terminal and an interface circuit for communication, the first terminal is disposed adjacent to the second terminal of the plurality of terminals, and connected to a power supply via a second resistor indicating a second resistance, the power supply performing output at the first voltage level (Vs), and the first resistance of the first resistor and the second resistance of the second resistor are set so that, in a case of an electrical short circuit between the first terminal and the second terminal, a voltage level of a voltage applied to the second terminal is lower than a rated voltage of the second terminal.