Features: 1. This new generation (version 5.1) of portable postal code test card supports three bus interfaces: MINI PCI, Mini PCI-E and LPC. 2. This card is easy for end users to use and works with high stability. It is your ideal and useful tool to repair laptop computers. It can diagnose signals that show the problem of CPU, memory, display card, etc. 3. LED displays show the diagnostic result of the motherboard. Especially useful to identify what is the problem when the computer is turned on and cannot find any hanging screen or machine. It is used to display the Error code and RST / CLK signals. 4. The part of the screen is made up of two 7-segment LEDs. The two "dots" of the LEDs are used to indicate the status of the notebook "RST" and "CLK". The left side "Dot" is for "RST", and the right side "Dot" is for "CLK". When the notebook is in the "reset" state, the left dot will light. And when the laptop has a correct CLK output, the right side "Dot" will light up. Note: Please note that Mini-PCI-E supports a limiter model of notebook, and the pin orientation must follow PIN1-3.3V, PIN2-LFRAME #, PIN3-LAD3, otherwise it should be tested with other port, like LPC or mini-pci. However, it can work with most laptops. Fit for: HP: V6000 series, including CT6 and other models; V9000 series, including AT8, AT9 and other Lenovo models : CW3, CW4, LE4, LE5 ??and other Violet models : SYMPHONY6.0, 7.0 and other Acer models : Most Fujitsu models : PROTLAND10 and other models Inventory: Most Toshiba and HP OEM models Package Contents: 1X Post Diagnostic Card (Debug)