Product Description PC Motherboard Diagnostic Card - 4-bit PCI/ISA POST Code Analyzer Product Name: Motherboard Diagnostic Card; Bit Size: 4 LED Indicators: 8 red LEDs; Interface Type: PCI bus, ISA bus Material: Plastic, metal, electronic components; Color: Green, black Card Dimensions: 9 x 8.2 x 1.5 cm / 3.5 inches x 3.2 inches x 0.6 inches (L*W*H); Cable Length: 30 cm / 11.8 inches Total Weight: 50 grams Suitable for both ISA and PCI buses. Identifies faults through differential audio encoding using the built-in speaker. Diagnoses motherboard signals, displaying issues with the CPU, memory, graphics card, etc. POST code display uses a dual hexadecimal dot matrix display to show the Power-On Self-Test (POST) status codes. Supports power indicator lights—+5V, +12V, +3.3V, and 12V (illuminated lights indicate the corresponding power supply is normal; otherwise, it indicates a power supply failure). Fully compatible with all motherboards with PCI and ISA bus interfaces. Supports remote display self-test function. Dual POST code display. One-click POST code retrieval. Package contents: 1 x Motherboard Diagnostic Card 1 x 2-pin connector cable 1 x User Manual Note: Due to differences in lighting and monitor settings, the color of items in the picture may slightly differ from the actual product. The permissible measurement error is +/- 1-3 cm.