Can I use Just Batteries With the MX10?

You can use batteries if you are using the MX10 for telephone use only.

It is necessary to use an AC power supply (Output: 7.5 VDC 200 mA. Input: 120 VAC 60Hz 15w) when using the MX10 with a computer.

Plantronics part number 26503-01. Under PTR/DCA/MX10