Features: 1.Applicability: The Laptop DDR3 tester fully supports Laptop DDR3 series memory modules. 2.Troubleshooting Reasons: The faults of computer memory sticks are mainly due to poor contact of the golden pin, wear of the golden pin, PCB breakage, damage to the data line exclusion, open circuit and short circuit of the video memory, and poor memory performance. 3.110 LED Indicators: The product uses 110 LED indicators to test all data lines of the memory, and the normal brightness is regarded as normal. 4.Note: When a hardware failure occurs in the data line loop, the brightness of the LED indicator will change, and it is abnormal if it is bright or not. 5.Portable: Laptop DDR3 memory stick circuit test tool troubleshooting card is small and portable, easy to carry. specification:Item Type: DDR3 Memory Test Card Material: PCB Battery Type: CR2032 Button Battery (Battery Not Included) Applicable: Laptop DDR3 Memory Stick PackageList:1 x Test Card