In order to install USB device you must have a driver, USB installers can be obtained or included in some motherboard drivers.
When you plug in the USB device to your computer it will automatically install. If it does not install right away give your computer a few minutes to work on it. If there was a disk included with your device you may have to insert it to install your device.
get a usb drive, copy it onto it un install it. Then, you use the usb drive to reinstall it.
Yes - you can have the installations files on a USB stick.
Yes, the Belkin Network USB Hub is easy to install.
On this website you can find the manual for your device, it should tell you how to install your Garmin GPS USB. https://buy.garmin.com/shop/shop.do?cID=132
You don't have to power down the device or computer to un-plug or plug it in.
Often, downloading the Chipset for your PC and mainboard will solve USB Driver problems, some times also Windows Update. If you are trying to install an external device you might need the drivers from the manufacturers website or the following DVD's. You can check devices and settings from 'Device Manager'.
A usb cable is not a device. A USB drive would be a Storage Device and still not be an Input or Output device. A USB keyboard would be an input device and a USB printer would be an output device.
The USB 2.0 and 3.0 device will work. USB 3.0 is backwards compatible with USB 2.0.
USB drive and DVD ROM
They work with any computer that has a USB port, to a USB device.
You can install Windows 7 from optical drive (CD, DVD), hard drive (a local copy), network or USB device.