Notebook/laptop motherboards ENVY15 576772-001, fully tested with high quality 1.delivery time:2-3 days 2.warranty:30days Promotional ... our own professional engineer team and repair service for you. With the high quality, good appearance and reasonable price, our customers are from ... test function:1. Check the appearance, such as turps, dust, tin soldering or other dirty mark on board.2. Check whether ...