Feature: 1. PCI ISA Interface: This PC diagnostic card adopts standard PCI and ISA interface, easy access to desktop PC. 2. 4 Digit Display: This PC mother board adopts 4 digit display, the first 2 digits indicate the current error code, and the last 2 digits indicate the previous error code. 3. Strong Compatibility: This PC diagnostic 4 digit card is compatible with ny kind motherboards with the PCI and ISA bus slot. Suitable for all computers with PCI or ISA interface. 4. Dual POST Code Display: This motherboard diagnostic card possesses self checking remote display function and dual POST code display, easy to view the POST code. 5. High Reliability: The POST code display is composed of a dual dot matrix hexadecimal read out that displays Power On Self Test (POST) status codes. Specification: Item Type: PC Diagnostic Card Material: PVC Purpose: Computer Motherboard Repair Tool Specifications: Made of All SMD Components, Does Not Hurt Hands, LCD Character Display. Applicable People: Professional Motherboard Repairers, Who Buy Old Motherboards. It Can Diagnose More Than 200 Common Motherboard Failures, and Give Corresponding Solutions According to the Manual.. Package List: 1 x PC Diagnostic Card1 x Cable1 x User Manual