Substrate connection structure

A substrate connection structure comprising:

• a first substrate with a first connector mounted on a front face, the first substrate having stiffness;
• a second substrate with a second connector mounted on a front face facing the front face of the first substrate, the second connector being detachably attached to the first connector, the second substrate having stiffness;
• and
• a restricting member including a projection portion, the restricting member including a plate-like member and being detachably attachable to the first substrate by being moved along a planar surface of the first substrate, the projection portion projecting from the front face of the first substrate and regulating a position where the second substrate is disposed relative to the first substrate in a state in which the restricting member is attached to the first substrate, and limiting a direction in which the second substrate is detached when the second connector mounted on the second substrate is detached from the first connector on the first substrate.