Lenovo ThinkPad X121e (English) User Guide - Page 21
USB connector, Always On USB connector, Notes, Power jack, Security keyhole
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2 USB connector The Universal Serial Bus (USB) connector is used for connecting USB-interface-compatible devices, such as a printer or digital camera. 3 Always On USB connector The Always On USB connector is used for connecting devices compatible with a USB interface, such as a printer or a digital camera. By default, even if your computer is in sleep (standby) mode, the Always On USB connector still enables you to charge some devices, such as iPod®, iPhone®, and BlackBerry® smartphones, by attaching the devices to the connector. However, with the ac power adapter attached, if you want to charge these devices when your computer is in hibernation mode or powered off, you will need to open the Power Manager program and configure corresponding settings to enable the Always On USB connector. For details about how to enable the Always On USB connector, refer to the on-line help of the Power Manager program. Notes: • Your computer may look slightly different from the illustrations. • Your computer is compatible with USB 1.1 and 2.0. 4 Power jack The ac power adapter cable connects to the computer power jack to provide power to the computer and charge the battery. An indicator to the left of the connector shows the status of ac power. When the ac power adapter is connected, the indicator is on. If a battery is installed in the computer, the indicator is green when the battery charges. 5 Security keyhole Your computer comes with a security keyhole. You can purchase a security cable and lock to fit this keyhole. Chapter 1. Product Overview 5