Sturdy black ABS case for durability and wear resistance; designed to withstand daily use and minor impacts No external power supply required; operates through the printing port and can function normally without an external power source Intelligent control chip provides smooth switching; performance main control chip delivers stable operation and broad compatibility Enables two computers to share a single printer; eliminates repeated plugging and unplugging when switching print tasks, protecting equipment and reducing office costs Function and performance: reliable printing control, fast switching between devices, and strong compatibility with commonly used printer interfaces Material and build: robust ABS housing in a compact form for desk use and easy placement in office or home setups Use scenarios Small office with two computers sharing one printer to reduce cable clutter and downtime between users Home office or shared workstation where multiple devices need access to a single printer without changing connections Classroom or lab environment requiring two computers to print to the same printer, improving workflow and reducing equipment wear Compatibility and practical advantages Designed to work smoothly without the need for an external power supply, simplifying installation Seamless integration with existing printing setups through the standard printing port Keeps equipment protected by minimizing connector wear from frequent plug in and out actions