To provide an electronic equipment that can be inserted in a host device without bothering about the front or rear side of the electronic equipment, without requiring reconstruction of the host device.

The electronic equipment comprises a case 201 that has a first edge portion and a second edge portion, a first terminal group provide at the first edge portion consisting of (n) pieces of terminals 11 to 16 from the first piece to the n-th piece, a second terminal group provided at the second edge portion and consisting of (n) pieces of terminals 21 to 26 from the first piece to the n-th piece, and a switch 41, 42 that switches over a first connection state in which each terminal in the ascending order of the first terminal group is connected to each terminal in the ascending order of the first terminal group respectively in corresponding order, and a second connection state in which each terminal in the ascending order of the first terminal group is connected to each terminal in the descending order of the first terminal group respectively in corresponding order.