This notebook Combo-Debug-Card uses 4-layers PCB design to provide a very stable signal quality. Meanwhile, it applies Tantalum capacitance to provide good power supply. So this Debug card is more suitable to be used in poor environment. It supports three bus interfaces: MINI PCI, MINI PCI-E and LPC, This product is easy to use and designed with good stability. perfect for IT enthusiasts and engineers to test and repair computer perfect and useful tool for notebook repairing partner, easy to use Diagnosis signal which show the problem of CPU, Memory, display card and so on. POST (Power On Self Test) card displays error after booting makes you know the error details easily. LED displays shows diagnosis result of motherboard. Colour: yellow + black Material: PCB + metal Size: 5 x 3cm Package Contents: 3 x Mini PCI PCI-E LPC PC Analyzer 3 x Chinese and English manual Note: In order to better products, we may improve the products, so the appearance of different batches of products may be different, if you mind, please be careful not to ! Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.