This Desktop Diagnostic Card can indicate exactly what is wrong with your notebook in just seconds. It can save time and money Laptop Diagnostic Card can diagnosis the motherboard signal which show the problem of CPU, Memory, display card and so on. LED displays shows diagnosis of motherboard. Especially helpful to where is the problem when power on the computer and find no display or machine hangs up Motherboard Diagnostic Card, also known as a POST Card Power On Test), is used to test diagnose motherboard problems This universal Notebook/Desktop Diagnostic Card is a diagnostic tool for technicians and administrators to troubleshoot various problems of compatible by using the 25 pin parallel printer port () and USB port (for power) or desktop PCs using a standard PCI slot With this card in hand, you no have to go through and time consuming process of trying to out what is wrong with your hardware If 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 problem It can even problems you 't even know you have Built in LED display on the card allows easy inside computer cases Dimension of cards: L8.5 x .0 x H1.4cm Weight: 80g Material: metal Color: Green Package Contents: 1 x PC Diagnostic Card; 1 x USB cable 1X Instructions Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.