Error message: The Hub Doesn't Have Enough Power Available to Operate...

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This article was previously published under Q234312

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SYMPTOMS

When you connect a new USB device to a USB hub that is connected to your computer, you may receive the following error message:

The hub doesn't have enough power available to operate the <devicename> USB Device. Would you like assistance in solving this problem? If you click No, the device may not function properly.

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CAUSE

This issue can occur if the USB hub is supplying the power to your device.

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RESOLUTION

To resolve this issue, connect the A/C adapter that is included with your device or connect an A/C adapter to the USB hub.

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Some USB hubs use bus-power or self-power. A bus-powered hub usually supplies only 100ma of power to the USB devices and self-powered hubs can supply up to 500ma. Keyboards, pointing devices, joysticks, and other low power devices require only up to 100ma. Other devices that require more power include video cameras, scanners, and storage devices.

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