This notebook Combo-Debug-Card uses 4-layers PCB design to a very stable signal quality. Meanwhile, it applies Tantalum capacitance to good 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 , This product is easy to 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 Diagnosis signal which show the problem of CPU, Memory, display card and so on. POST ( On Test) card displays error code quickly 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: 1 x Mini PCI PCI-E PC Analyzer 1 x Chinese and English manual Note: In order to seek better products, we may 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 and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.