In order to connect certain devices like external hard disks, webcams, scanners, printers, keyboards, mouse, mobile phones and digital cameras into your computer, a USB connection is needed. These devices should be plugged to a USB cable before they are connected to a USB port on your computer. For some of the USB devices like keyboards and mouse, USB cable is permanently is attached to them. Certain other USB devices like USB flash drives don’t’ need a cable. They have an integrated USB connector which can be plugged directly into a USB port on your computer.


If you attach a device into a USB port, the first time itself it is identified by the Windows and a driver will be installed for that device. The communication between the hardware devices and these devices are effected only by these drives. A USB device can not function properly without a driver. But for some other devices, the drivers have to be installed manually. A software disc will be provided by the device manufacturer for those devices. After the successful installation, Windows will inform you. The software that came along with your USB device has to be checked for its compatibility with your version of Windows. If your USB device doesn’t have the disc with the driver, you have to search online to find the device driver. From the Support section of the device manufacturer’s website, you can download the desired drivers for your devices.

In case if your USB device uses a power cord, you should connect it to a power source and turn them ON before connecting it. If enough power is not available in the USB hub to support your device, your device won’t function properly and you have to attach it your computer’s USB port. You can fix your device to any USB port in your computer. If you have to connect and disconnect the device frequently, it is better to use the USB ports on the front. You can plug your device to any port available.

Multiple Device Connections

Devices having their own power cords like printers and smaller devices such as mouse and USB flash drives can function properly even if they are connected to an USB hub not having enough power. But scanners and web-cameras entail more power and hence there is a necessity of a powered hub for these devices. External hard disks transmit large amounts of information. Hence high speed USB 2.0 port is necessary for them. You can add USB 2.0 ports to older computers by installing a USB 2.0 card inside your computer.

While unplugging the devices, certain precautions have to be followed. Storage devices should be unplugged after the flashing of light is finished. This ensures the completion of the storage. They can also be unplugged after seeing the Safely Remove Hardware icon in the right side of the taskbar. Hence USB devices can be more easily operated from your computer.