Auto USB Passthrough for the M401.

Voltage is set at an optimum level to preserver atomiser longevity.

If you are are someone that spends hours at a computer this is ideal. You can also get a USB car adaptor and use it while driving.

Please make sure if you use a USB car adapter or wall plug that they are rated at 1A/5V. The iPod charge kit is the perfect rating for using USB PT's.