Features:New computer test card with detailed instructions1 From booting the computer to entering the system, the complete system is displayed It is convenient to test the reasons why the motherboard does not turn on, such as the memory is not plugged in, the CPU is broken, the graphics card is broken, or the RESET button of the chassis is not plugged in 2 Anyway, with him, computer failures are clear at a glance and can be easily eliminated3 The working principle is to use the detection results of the internal Bos self-check program in the motherboard, and display the code through the code meaning quick reference table in this book, you can quickly know the computer failure Description:Can be used especially when the computer cannot boot the operating system and the black screen speaker does not sound, the use of this card is more convenient to make you do more with less, a very good tool With this card, you are no longer a rookieIt is easy installation, just plug into the PCI interface Intercept and hex the code of your booting computer Specifications:Color: Green and BlackHexadecimal character display5 LED indicator: -12, +12, RST,VCC,3V3Detailed & precise LED func