1. FOR MAINBOARD TEST: The memory detection card supports for and for motherboard with DDR3 interface, no external power supply required. 2. WITH LED LIGHT: Use LED to indicate the open circuit and short circuit of data line and address line, and the operation is clear and convenient. 3. MULTIPLE USAGES: Essential tool for repairing computer motherboard, detect mainboard failures such as no boot, no display, no memory reading, etc. 4. APPLICABLE SCENES: Widely used to repair the motherboard that is not powered on, and the same motherboard can be used to determine the fault. 5. GOOD PERFORMANCE: This motherboard detection card has a compact size, easy to use, with high accuracy and less interference, stable and reliable. Item Type: Laptop Memory Test Card Battery: 1 x 6V button battery CR2032 (battery not included) Color: Green Material: PCB Package Contents: 1 x Memory Test Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.