With NEC USB2.0 controller, it works backward compatible either when any one of downstream port is connected to an USB1.1 compliant device, or when the upstream port is connected to a USB1.1 compliant host. The USBG-7DU2 also provides an unique feature to work in the bus-powered mode without an external AC power adapter. Very convenient for light power consumption USB devices to work in this mode without an extra power supply. Only plug then go ahead. Besides, the external 2-pin Terminal Block Connector is used for self-powered mode if you need more power on the 7 downstream ports. Since the USB is the most popular external port for the devices to connect to PC, the USBG-7DU2 provides an ideal solution to expand your USB ports immediately and save your investment. more »
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