Compatibility for Trainer: This USB key connector is specifically designed for use with VBand software and code trainers, offering seamless integration for both manual and automatic keystroke practice on computer and mobile platforms. Dual Version Operation: Package includes both computer version and VBA version connectors, supporting Windows, iOS, Hongmeng systems with true plugandplay functionality no additional drivers required. Connection Interface: Features a standard 3.5mm key interface that accommodates most keys (must be 3.5mm diameter), while requiring OTG adapters for mobile phone connectivity to VBand websites. Intelligent Key Recognition: Our trainer automatically identifies between manual and automatic keystroke modes, eliminating complex setup procedures simply connect your electric key to the trainer first, then to your device. Use scenarios: Software development and training: Use with VBand to practice manual and automated keystrokes on a PC or mobile device during coding or training sessions. Onthego practice: Connect via OTG adapters to VBand websites to perform keystroke training on iOS or Hongmeng devices. Testing and automation workflows: Efficiently switch between manual and automatic keystroke modes within a training workflow to evaluate performance and responsiveness.