HP Pavilion zt3100 HP Notebook Series - Startup and Reference Guide - Page 110
Connecting a Powered Device, Connecting a USB Device
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Hardware Options and Upgrades Connecting a Powered Device To connect the notebook to an optional external device that has a power cord: 1. Be sure the device is turned off. 2. Connect the device to the jack or connector on the notebook specified by the device manufacturer. 3. Plug the device power cord into a grounded electrical outlet. 4. Turn on the device. ✎ If a properly connected external monitor or other display device does not display an image, try pressing the Fn+F4 hotkeys to switch the image to the new device. To disconnect a powered external device from the notebook: 1. Turn off the device. 2. Disconnect the device from the notebook. Connecting a USB Device USB (universal serial bus) is a hardware interface that can be used to connect external devices such as a USB keyboard, mouse, drive, printer, scanner, or hub to the notebook. A hub is a connecting device that can be either powered or unpowered. USB hubs can be connected to a USB connector on the notebook or to other USB devices. Hubs support varying numbers of USB devices and are used to increase the number of USB devices in the system. ■ Powered hubs must be connected to external power. ■ Unpowered hubs must be connected either to a USB connector on the notebook or to a port on a powered hub. 8-2 Startup and Reference Guide-Part 2