Patent ID: 7529098

Claim:
An electronic card configured to be received in a host apparatus, comprising: a circuit board having a leading edge and a trailing edge, the leading edge being inserted into the host apparatus when the electronic card is installed in the host apparatus, the trailing edge being opposite to the leading edge; a semiconductor device mounted on the circuit board; a card case covering the circuit board; a circuit pattern provided on the circuit board; a data pin provided on the circuit board, the data pin being adjacent to the leading edge of the circuit board; a ground pin provided on the circuit board, the ground pin being adjacent to the leading edge of the circuit board, the ground pin configured to be supplied with a ground potential when the electronic card is installed in the host apparatus; a first ground conductor provided on one surface of the circuit board, the first ground conductor being electrically connected to the ground pin; and a first insulating material provided on the one surface of the circuit board, the first insulator material having a first opening that exposes the first ground conductor, the first opening being adjacent to the trailing edge.