The new PCI-E with light tester uses software control circuit, can automatically and quickly detect the open and short circuit of the south bridge chip of the motherboard, can replace manual measurement at the same time, the tester is newly upgraded, and the gold finger part is increased, you can intuitively use the multimeter pen to test the relevant test points in the gold finger part, and can be used as a resistance card This tester can be used to repair the computer motherboard does not work (digital card display FF or do not display), the work is unstable, the graphics card does not display and other motherboard failures Insert the tester into the PCI-E port to be tested and use the standard Type- C line for the tester power supply (charging head, charging bank, USB port on the motherboard can be used) can also be used computer motherboard power 6P graphics card power supply port for the tester power supply, the test switch, LED lights on the tester when all lit, if a light is not bright or super bright the corresponding point is open or short circuit, when checking whether the isolation capacitor connected to it is damaged Note: When testing a new motherboard or a motherboard with multiple PCI-E slots, please use the PCI-E slot near the CPU for testing. When testing the remaining slots with this card, it is possible to show partial or all light. Colour:As Shown Material:PCB Instructions for use: Insert the tester into the PCI-E port to be tested, and use the standard Type-C cable to power the tester (charging head, power bank, motherboard USB port can be used). You can also use the computer motherboard power supply 6P graphics card power supply port to power the tester. , the test switch, and all the LED lights on the tester light up. If a certain light does not light up or is extremely bright, the corresponding point is an open circuit or short circuit. Check whether the isolation capacitor connected to it is damaged. Note: When testing a new motherboard or a motherboard with multiple PCI-E slots, please use the PCI-E slot close to the CPU for testing. When using this card to test the remaining slots, it is possible that some or all of the other slots not light up. Condition. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Tester Card kit 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.