Feature: 1. Use four-digit fault code display; 2. The code value of "Start Code" is a specific "0000" or "FFFF", which is clear at a glance. However, the code value of the "start code" of the traditional two-code diagnostic card is uncertain and cannot be accurately distinguished by the human eye; 3. Able to test the speed of motherboard PCI and ISA bus; 4. Can test the fault of the diagnostic card itself; 5. It is fully compatible with various high, medium and low-end motherboards (for motherboards of various low, medium, high and even server CPU platforms from FOR Intel, for AMD, VIA and other manufacturers), the fault code is more accurate and reliable, and it does not crash; There is a function of repeatedly checking the code, and the code will never flash by again. You press the switch once to display a code to pause; The use of SMD components does not hurt hands; It has the function of beeping to report failure; This card can be plugged into ISA or PCI; After inserting the wrong slot or reversely, the power will not burn any parts; Can display the crash of repeated automatic reset under the black screen; Power on the board without plugging in the CPU and other empty boards to diagnose important signal conditions in the board; The computer motherboard fault diagnosis card displays the cause of the fault through signal lights and four-digit digital tubes, and has a buzzer. The operation of the tested motherboard can be seen at a glance. Due to different batches, the appearance, color, and printed words of the product may be different, which does not affect the use. Material: PCB colour: green Package Contents: 1 x Diagnostic Post 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 allowe