How much power does the Jabra Link 400 use?

To comply with USB 2.0 standards, the Link 400 may use up to 2.5W (5VDC and a maximum current of 500mA).

Power consumption will change based on the action being performed. For example, idle mode will require less power than an active call or streaming media. Maintaining a close distance between the Engage headset and Link 400 will also reduce power consumption.