Description: Features: 100% brand new and high quality. Both ISA bus and PCI bus are suitable. Diagnose motherboard failures through sound codes with the built-in speaker. Retrieve previous POST codes with a single button press. It can diagnose motherboard signals, indicating issues with the CPU, memory, graphics card, etc. The POST code display features a dual, dot-matrix hexadecimal readout showing Power On Self Test (POST) status codes. Supports power source working indicators: +5V, +12V, +3.3V, and -12V (Indicator light on means the respective power is good; otherwise, it indicates a fault). Fully compatible with all types of motherboards featuring PCI and ISA bus slots. Self-checking remote display function. Dual POST code display - Users can read the POST code at the PCB component and solder sides. Easily view the POST code when the POST card is connected to the computer system. Specifications: Material: Plastic + Metal Color: Green (as pictured) Size: Approx. 8x8.5cm / 3.15x3.35in Quantity: 1 Pc (other accessories demo in the picture is not included) Note: 1. Transition: 1cm=10mm=0.39inch 2. Please allow 0-1cm error due to manual measurement. Ensure you don't mind before bidding. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 X Main Diagnostic Card (No retail package)