Determine defects by different sounds coded with built-in speaker Suitable for both ISA bus and PCI bus Diagnose motherboard signals indicating issues with CPU, memory, video card, etc. Supports power source working indicator +5V, +12V, +3.3V, and -12V (LED lights up when respective power is normal; otherwise indicates power failure) Fully compatible with any motherboard with PCI and/or ISA bus slot Self-checking remote display function Dual POST code display allows user to read POST codes directly from PCB components; easy to view when POST card is inserted into computer system Recall previous POST codes with the touch of a button Dimensions: 90mm x 82mm Quantity: 1 PC Package includes: 1 x Main Diagnostic Card 1 x Ribbon Cable