Lenovo ThinkPad X220 (English) User Guide - Page 29
If you attach your computer to the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series - ultrabase series 3
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3 USB connector (left) The Universal Serial Bus connector is used for connecting devices compatible with a USB interface, such as a printer or a digital camera. Note: Your computer is compatible with USB 1.1 and 2.0. When you attach a USB cable to the connector, make sure that the mark is to the upper side. Otherwise the connector might be damaged. 4 DisplayPort connector Your computer supports the DisplayPort, a next-generation digital display interface that connects a compatible projector, external monitor, or HDTV to your computer. 5 Monitor connector You can attach an external monitor or a projector to your computer to display computer information. Note: If you attach your computer to the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, or ThinkPad X220 Ultrabase and use a monitor connector, use the monitor connector on the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, or ThinkPad X220 Ultrabase , not the one on the computer. For details, refer to the instructions in "Attaching an external monitor" on page 71. 6 USB connector The Universal Serial Bus connectors are used for connecting devices compatible with a USB interface, such as a printer or a digital camera. Notes: • Your computer may look slightly different from the illustrations. • Your computer is compatible with USB 1.1 and 2.0. Some models are also compatible with USB 3.0. • If your computer is a USB 3.0 model, any function specific to USB 3.0 will not work until your Windows operating system has been started. However, USB 2.0 or 1.0 devices will work. 7 Fan louvers (left) The internal fan and louvers enable air to circulate in the computer and cool the central processor. Note: To avoid impeding airflow, do not place any obstacle in front of the fan. Chapter 1. Product Overview 13