- 4x extended USB ports with switchable dual-host inputs to share USB devices between two hosts - Industrial grade hub chip using MTT technology for stable and smooth operation with up to 4 concurrent USB connections - ESD protection on each USB port to prevent electric surge damage and data loss; over-voltage protection guards connected devices from high voltage power input - Multiple protection circuits include over-voltage, over-current, short circuit, over-temperature, reverse current, under-voltage lock-out; 8 kV ESD protection and filtering protection, among others Use scenarios - Dual-host workstation: connect two computers or laptops to the dual inputs and share USB devices such as keyboards, mice, USB storage, or peripherals without swapping cables; switch the active host as needed - Testing or development lab: rapidly alternate USB device access between two test rigs or development machines while maintaining protection against surges and faults - Industrial or lab environment: protect connected USB devices in environments with variable power or transients while enabling convenient sharing of peripherals across multiple controllers or workstations Key attributes - Function: enables sharing of USB devices between two hosts with a switchable input design - Compatibility: supports standard USB devices through four extended ports; protection features apply to each port - Protection: comprehensive circuits for surge, fault, and fault-origin isolation to improve reliability and data integrity - Performance: industrial grade hub technology aimed at stable multi-device USB operation under dual-host usage - Safety: ESD and voltage/current protections reduce risk of damage to devices and hosts in multi-system setups Notes - Design focuses on reliable dual-host USB sharing and robust protection without introducing marks beyond the specified features - No additional devices or power requirements beyond standard USB connections are implied by the specification