The ATX motherboard represents the standard form factor for mainstream desktop computing, measuring 305mm × 244mm and providing an optimal balance of expansion capabilities, component compatibility, and physical stability. This specification, established by Intel in 1995 and subsequently refined, defines not only the physical dimensions but also the mounting hole positions, I/O panel layout, and power connector placement to ensure compatibility across cases and power supplies. The standard ATX form factor typically features seven expansion slots, allowing configuration with multiple graphics cards, storage controllers, capture cards, and other PCIe devices simultaneously. The larger physical size compared to compact form factors enables more robust power delivery systems with additional phases for stable CPU operation and overclocking, better spacing between components for improved thermal management, and additional connectivity options including multiple M.2 slots for high speed storage. The standard I/O panel provides ample space for comprehensive port selection including multiple USB interfaces, networking solutions, and audio connections. The 24 pin ATX power connector and supplemental CPU power connectors (typically 8 pin or 8+4 pin) ensure stable power delivery to all components. Our company offers a wide selection of ATX motherboards across various chipsets and feature sets, from entry level models providing essential functionality to premium models with advanced overclocking capabilities, premium audio solutions, and comprehensive connectivity options. Through our established supply chain partnerships and global logistics network, we provide these foundational components to customers worldwide, with technical support available for compatibility verification, BIOS configuration, and system integration guidance to ensure successful builds.