Features * 4x extended USB ports, compatible with USB 2.0 / 1.1 * Industrial grade HUB chip, adopting STT technology, allows stable and smooth 4x concurrent USB connections * ESD protection for each USB port, preventing electric surge damage and data loss * Over-voltage protection, effectively preventing other high voltage power input from damaging the connected devices * Multiple protection circuits: over-voltage, over-current, short circuit, over-temperature, reverse current, under voltage lock-out, 8KV ESD protection, filtering protection, etc. * LED indicators for monitoring operating statuses of power supply and USB ports * Industrial grade metal case, rugged & durable, with mounting holes for easy installation * Application environments: suitable for industrial/office environments with higher level device requirements Specifications Standard:USB 2.0 Data rate:up to 480Mbps USB HUB input:operating voltage: 5V connector: USB-B USB output : operating voltage: 5V@Imax:1.2A? connector: USB-A External power:power supply voltage: DC 5V? connector: DC jack Operating environment:-40? ~ 85? OS support : Mac OS (8.6 or above), Linux(2.4.20 or above), Windows 11 / 10 / 8.1 / 8 / 7 / XP ? up to 1.2A Max output current for each USB ports, when there's enough power input ? comes with 5V 2A power supply, it is recommended to use another 5V 4A or above power supply for higher USB loads Package Content USB-HUB-4U x1 USB cable ~1.2m x1 5V 2A power adapter x1 See moreSupport OS :Mac OS (8.6 or above), Linux(2.4.20 or above), Windows 11 / 10 / 8.1 / 8 / 7 / XP Application environments: Suitable for industrial/office environments with higher level device requirements. USB HUB input:operating voltage: 5V. connector: USB-B. USB output: operating voltage: 5V@Imax:1.2A? . connector: USB-A. Over-voltage protection, effectively preventing other high voltage power input from damaging the connected devices. Multiple protection circuits: over-voltage, over-current, short circuit, over-temperature, reverse current, under voltage lock-out, 8KV ESD protection, filtering protection, etc. ESD protection for each USB port, preventing electric surge damage and data loss. LED indicators for monitoring operating statuses of power supply and USB ports. Industrial grade metal case, rugged & durable, with mounting holes for easy installation. Industrial grade USB HUB, Extending 4x USB 2.0 Ports,Compatible with USB 2.0 / 1.1. Industrial grade HUB chip, adopting STT technology, allows stable and smooth 4x concurrent USB connections.