Features: 100% brand new and high quality Notebook four-digit test card is suitable for computers with POST code output to the parallel port, flexible power supply mode, can be connected to USB or computer host power Full SMD components production, LCD character display. Laptop diagnostic card can diagnosis the motherboard signal which show the problem of CPU, memory, display card and so on Built in LCD display on the card allows easy view inside computer cases. It can diagnose more than 200 common motherboard failures and give corresponding solutions according to the manual. What's more powerful is that it can be diagnosed without plugging in the cpu. Package Includes: 1 Set x Computer Motherboard Repair Tool 1 x USB cable Specifications: Item: Computer Motherboard Repair Tool Display: LCD Character Display Size: Mixed note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.