"How to" in 3 steps :
1- You insert the test card in the parallel port of your desktop or laptop computer, or your can choose a PCI slot of your desktop computer, and then you start the computer (even without CPU and without RAM the motherboard will boot !).
2- If anything is wrong, an error code will be displayed (via the display or beep sound)
3- You refer to the manual, and this code will tell you where is the problem.
Very recent item works with lot of existing motherboards !.
Displays also the voltage (when use on PCI)
This professional version can also :
Test the bus speed of the PCI slot, it can diagnose the trouble of not only the motherboard, but also the testcard itself, it can display the POST codes from beginning to end - and the codes that have gone can be thumbed throuh step by step-, It displays a code, but also a sound, and even the voltage !
Track up to 10 items on this computer in 
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