Plantronics USB problems

After updating to MAC OS 10.4.10 my USB Plantronics headset dead in the act. No microphone!

Some searching in Apple support website… Finally I found the solution:

Products affected

• Mac OS X 10.4.10
• Plantronics USB audio headset, microphone, or audio adapter

Solution

1. Make sure the device is connected to a USB port.
2. Open Audio MIDI Setup, which is in the Utilities folder within the Applications folder.
3. Make sure the Default Input pop-up menu (under System Settings) is set to the device.
4. Choose your device from the “Properties For” pop-up menu.
5. In the bottom right left area of the window (under Audio Output Input), deselect the “Mute” checkbox.

Working !