Features: 1. Applicable scenarios: This DDR4 memory test card is suitable for desktop computers equipped with DDR4 memory. 2. Computer memory failure: Memory issues can arise from poor contact of the gold pins, wear of the gold pins, PCB damage, data cable damage, open circuits, short circuits in video memory, or faulty memory itself. 3. LED indicator light: The LED indicator is designed to test all data lines of the memory. A normal brightness indicates normal functionality. If there is a hardware issue in the data lines, it may show abnormal behavior whether it is on or off. 4. Testing indicators: A flashing test light indicates poor contact of the gold pin. If no indicator light is present, this indicates a hardware open circuit failure. Inspect the gold pins for wear or damage and ensure the PCB is intact. 5. Easy to use: Simply insert a CR2032 battery into the holder on the test card, or connect using the Type C cable, then insert the memory card for testing. Material: plastic Colour: green Package Contents: 1 x DDR4 memory tester 1 x Type C cable 4 x PCB spacers Only the above package contents are included, other products are not provided. Note: Light reflection and different displays may cause the item's color in the picture to differ slightly from reality. The allowable measurement error is +/- 1-3 cm.