Compact SMD blue dot replacement switch for mouse side key and modification. Designed as a direct 2pin SMD substitute for compatible models, it restores sidebutton functionality and provides a consistent tactile response. Key benefits Restores functionality quickly: a worn or failed side key switch to recover full button performance without replacing the entire mouse. Direct compatibility for listed models: Form factor and 2pin layout match the original side key SMD switches used in the compatible models below. Easy to install for technicians: SMD package is ready for PCB soldering with standard rework tools. Consistent actuation: Blue dot actuator delivers predictable tactile feedback suitable for side key use. Important attributes Function: SMD tactile switch for mouse side key replacement and custom mods. Compatibility: Anywhere MX, M905, G903, G900, G603, G502, GPW (compatibility reference only; confirm fit for specific revisions). Pins: 2pin SMD configuration for surface mount PCB installation. Form factor: Compact surfacemount design intended to match side key assemblies. Materials and construction: SMD housing with metal contact terminals for PCB soldering and reliable electrical connection. Performance: Designed for responsive actuation and repeatable switching behavior appropriate for side buttons. Typical applications a mouse with an unresponsive or intermittent side key by swapping the original SMD switch with this 2pin replacement. switches during a restoration project for older compatible mouse models to restore original button feel. Use in custom mouse modification or prototyping when a compact 2pin side key switch is required. Installation notes Intended for users familiar with SMD soldering and PCB rework. Proper ESD precautions and correct soldering technique are recommended. Verify compatibility with your specific hardware revision before installation. What makes this practical Matches the SMD 2pin layout commonly used for side keys in the listed models. Small footprint and blue dot actuator provide a reliable, repeatable tactile response for sidebutton actions. Useful for technicians, hobbyists, and anyone maintaining or modifying compatible mice.