Hardware Upgrades and Replacements
Connecting a USB Device
A device connected to the computer by USB can be used when the computer is running Windows.
Universal Serial Bus (USB) is a hardware interface that can be used to connect an external device such as a USB keyboard, mouse, drive, printer, scanner, or hub to the computer or an optional expansion product.
A hub is a connecting device that can be either powered or unpowered. USB hubs can be connected to a USB port on the computer or to other USB hubs. 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 port on the computer or to a port on a powered hub.
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