Laptop Computer 25Pin Diagnostic Card with USB Parallel Port PC Motherboard Analyzer 4-Digit Analysis Post Tester _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Computer Diagnostic Card with USB Parallel Port Motherboard Analyzer Laptop 4-Digit Analysis Post Tester _x000D_ _x000D_ Notice: _x000D_ _x000D_ _x000D_ 1. USB Parallel Port Connect Laptop , just for power supply , because it has not 5V power output _x000D_ _x000D_ _x000D_ 2. Turn on laptop, according to the data display, the fault can be identified by referring to the diagnostic card fault code reference table _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ This is the diagnostic card for the parallel port interface of the laptop. Desktop motherboard cannot be used. _x000D_ _x000D_ _x000D_ Diagnostic card+one troubleshooting manual _x000D_ _x000D_ _x000D_ [Purpose]: Computer motherboard repair tool _x000D_ _x000D_ _x000D_ [Specification]: Full surface mount component production, LCD character display. _x000D_ _x000D_ _x000D_ Comment : Professional motherboard repairers can diagnose over 200 common motherboard faults and provide corresponding solutions according to the manual. Diagnosis can be performed without inserting the CPU. _x000D_ _x000D_ _x000D_ A great tool that brings us convenience and improves efficiency, the notebook parallel port diagnostic card! _x000D_ _x000D_ _x000D_ Tip: USB is used for detecting the parallel port interface of laptops, and it only serves as a power supply (because the parallel port interface does not have a 5V voltage output). _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ instructions: _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Insert the parallel port card into the laptop's parallel port (print port), and then connect the USB cable (USB is powered!). Turn on the laptop's power, and according to the information displayed, the fault can be determined by referring to the diagnostic card fault code reference table _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ The characteristics of the four parallel port diagnostic card are as follows: _x000D_ _x000D_ _x000D_ Suitable for computers with POST code output to parallel port (LPT). Flexible power supply method, can be connected to USB or computer host power supply; _x000D_ _x000D_ _x000D_ Display using a four digit code; _x000D_ _x000D_ _x000D_ The code value of the "start code" is a specific "0000" or "FFFF", which is clear at a glance. _x000D_ _x000D_ _x000D_ Can test and diagnose the card's own faults; _x000D_ _x000D_ _x000D_ It is fully compatible with 286 to PIV high, medium, and low-end motherboards, with more accurate and reliable fault codes and no crashes; _x000D_ _x000D_ _x000D_ There is a code review function, and the code will never flash by again. Pressing the switch once will display a code and pause; Note: The description of code types in the manual is not very complete. If the buyer friend cannot find the corresponding code explanation in the manual, he can find the answer on the Internet. The diagnostic card only diagnoses the approximate direction of the problem and is not very accurate. It still needs to be carefully studied! _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Friendly reminder: _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ The main function of the diagnostic card is to display the code of the motherboard BIOS self-test program. By referring to the displayed code and comparing it with the code description, the fault location can be found. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_