““battery power. To put your Kindle in sleep mode, press and release the Power button. To wake up your Kindle, press and release the Power button. If your Kindle does not power on or is unresponsive during use and you need to restart it, press and hold the Power button for 7 seconds until the Power dialog displays and then select Restart. If the Power dialog does not display, press and hold the Power button for 20 seconds. Micro-USB/power port: You can use the supplied USB cable to connect””