Product features and parameters Manual draw card, scratch card supports two-way Interface: USB or PS/2 or RS-232, not need an external power supply Stable performance, the unique body design, so smooth and accurate draw card,beautiful and practical Comply with ISO 7811 Use life: >300,000 times Work mode: read-only Read track: 1,2,3 track, ( or specify 2 track, 23 track, 12 …