Features High Efficiency: The computer graphics card tester can quickly detect faults such as no display, blurry display, and unstable display without the need for individual measurements of the PCI bus interface between the graphics card and motherboard using a multimeter. It can accurately identify issues like short circuits and CPU failures with high accuracy rate, making it an essential tool for graphics card repairs. Versatile Testing Capabilities: The graphics card tester diagnostic tool is specifically designed to test the data bus connections between the graphics card CPU and the computer motherboard's PCI interface for open circuits and short circuits. Comprehensive Fault Diagnosis: When troubleshooting computer graphics card issues, the graphics card diagnostic analyzer tester allows technicians to inspect for burn marks, broken PCB traces, and abnormal voltages before conducting further tests. This comprehensive approach helps in identifying underlying problems accurately and efficiently. User Friendly Operating: The display video graphics card tester is designed for ease of use, with a simple setup process involving inserting the faulty card into the corresponding slot, applying a 12V power supply, and pressing the push buttons switch. The indicator lights on the tester provide clear feedback on the status of the graphics card, allowing for quick and accurate fault diagnosis. Accurate Fault Localization: The graphics card tester with Light's indicator lights offer quick feedback on the condition of the graphics card, helping technicians pinpoint issues with the main CPU chip such as open circuits or short circuits. In case of any anomalies in the indicator lights, further confirmation using a multimeter can be done to accurately locate the fault points, ensuring thorough troubleshooting and repair. Spec: Item Type: Graphics Card Tester with Light Material: PCB Voltage: DC12V How to Use: Directly install and use. Package List: 1 x Graphics Card Tester 1 x Manual 1 x Data Cable Note: The color of the graphics card slot is random. Package List 1 x Graphics Card Tester 1 x Manual 1 x Data Cable