The notebook diagnostic card support Mini PCI Mini PCI-E LPC bus interface. When diagnostic card work just connect to one of the interface and the remaining two interfaces to be connected. The diagnostic card easy to use good stability is the ideal tool for laptop repair. Features: 1. It uses a four-layer PCB board design makes the signal more stable able to work long hours under harsh environment; 2. Using a tantalum capacitor for the entire product provides a more stable and reliable power supply; 3. In the layout better more easy to operate. 4. Adds two LEDs provide more references for maintenance; Ideal for IT enthusiasts and engineers to test and repair computer. POST (Power On Self Test) card displays error code quickly after booting. Error code table offered makes you know the error details easily. Hexadecimal character display. Supports AMI Award Phoenix & Tandy 300 BIOS.