new and high quality Determine defects by difference sounds coding with build-in speaker. It can diagnosis the motherboard signal which show the problem of CPU, Memory, video card, etc. Fully compatible with any kind motherboards which has the PCI and ISA bus slot. The POST code display is made up of a dual, dot matrix hexadecimal read-out that display's Power On Self Test (POST) status codes., Weight: 0.17857443222 Pounds, Manufacturer: Kueohse