This document is the user manual of an M/B based on Intel G31 Express chipset and Intel ICH7 chipset for LGA 775 Quad Core Ready Intel Core Processor Family. The document provides environmental safety instructions for the product, including avoiding dusty, humid, and extreme temperature environments, and specifying the suitable temperature range. It also mentions that dramatic temperature changes may cause contact malfunctions and crackles, and recommends an adaptive phase when moving the computer from a cold to a warmer environment to avoid condensation. Additionally, the document states that the increasing temperature of the capacitor may decrease the computer's life, and using a close case may decrease the life of other devices.