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AVerVision U50 is a USB powered document camera. It comes with 2 extra USB Hubs wherein you can connect any external USB device such as keyboard, mouse, USB flash drive and more. An optional power adaptor can be used in cases where the connected external USB device requires more power.
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Connect a power adapter to a standard 100V~240V AC power outlet. The power from the computer USB is sufficient enough to power AVerVision U50. However, if your laptop or desktop USB port does not supply as much power as the USB specification says it should, then you may encounter problems and need an external power supply.