A tape cassette configured to contain a tape has a box-like cassette case having a wall formed with one of a recess and a hole, and a substrate having a first surface and a second surface opposite to the first surface, at least two conductive electrodes being provided to the first surface, a storage electrically connected to the pair of conductive electrodes being provided to the second surface. The at least one of the recess and the hole being arranged at a central area, in a particular direction, of the wall, and the substrate being attached on the wall such that the substrate is arranged at the one of the recess and the hole, and the at least two conductive electrodes are aligned in the particular direction regardless of whether the substrate is attached on the wall in a first orientation or a second orientation which is a reversed orientation with respect to the particular direction.