What Are BUS POWERED USB Devices?
USB was designed to allow many peripherals to be connected using a standard interface port, and to improve the plug-and-play features of PCs by allowing these devices to be connected and disconnected without rebooting the computer! Another convenient feature includes providing power (also known as Bus Power) to low-consumption devices without the need for an external power supply. So Bus Powered means the device is powered by the USB Port, and not an external power adaptor. Bus Powered devices offer a lot of flexibility, particularly when used on laptops and other portable devices. However, you need to determine when bus power is best. When is Bus Power best? • You have a desktop with ample USB ports, or • You have a laptop and you need to take your Bus Powered devices with you, or • You only use the device intermittently and want the simplicity of no external power adaptors, or • You want to keep desktop clutter to a minimum, and want to eliminate power cables. The best example of a U
