Motherboard Diagnostic Card, also known as a "POST Card" (Power On Self Test), is used to test & diagnose motherboard problems2 Digits Digital Display PC & Desktop Diagnostic Card is a powerful diagnostic tool for technicians and administrators to troubleshoot various problems of compatible DesktopsWith this card in hand, you no longer have to go through tedious and time consuming process of trying to figure out what is wrong with your hardwareDesktop Diagnostic Card will indicate exactly what is wrong with your Desktop in just secondsIt can save time and moneyIf your computer has problems powering up, freezes for long periods of time, suddenly shuts down unexpectedly or shows other signs of hardware problems - this card can diagnose your problemIt can even pinpoint problems you don't even know you haveIt is designed to work on Desktop Computers