ADDCOM ADD-20USB Manual do utilizador - Página 2

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ADD-20USB Headset User Manual

General USB troubleshooting

Most USB problems can generally be traced to one of the

following problems:

Problem

Computer stops responding, suggesting a malfunctioning or

incorrectly-configured device.

Solution

1. Check that the device is plugged directly into the computer

(root USB Hub) and not into a secondary hub (external USB

device). If the device is plugged into a secondary hub, unplug

the device from the hub and then plug the device directly into

the root hub.

2. If unsuccessful, restart your computer and try the headset again.

3. If unsuccessful, try connecting the headset to another computer.

If the headset works, it is a problem with your computer. If you

encounter the same issue on the new computer, contact your

supplier.

Problem

When USB connection is plugged in, the computer prompts for a

device driver.

Solution

Check with the manufacturer of the device or with your supplier to

determine if the necessary driver is available.

Problem

Device appears as a duplicate of a device in the Device

manager. The second device may be displayed with an

exclamation point in a yellow circle in device manager. You may

be unable to remove the "ghost" device until you unplug the

parent device.

Solution

Make certain that you have the most up-to-date firmware that

is available for both your computer's BIOS and each individual

device.

Problem

Signal distortion on the headset is present. This may occur if you

plug a high-speed device into a low-speed cable.

Solution

Verify the entire USB chain is working correctly. Confirm that a

device that requires the ability to draw power from the hub is not

plugged into a non-powered hub. If the hub is a powered hub,

verify that the power supply for that hub is configured properly.

For troubleshooting and support please refer to

www.addcom.com

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