SODIAL(R) Motherboard USB & PCI Analyser Diagnostic Card Tester for Desktop & Laptop PC - SODIAL Retail Packaging 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 result of motherboard. Especially helpful to pinpoint where is the problem when power on the computer and find no display or machine hangs up