The first option - which is extremely easy to implement - is the USB hub. This external device plugs into one of your existing USB ports to provide you with two, four or even more ports. There are other benefits to the USB hub as well, one being that you can locate the hub at a more convenient location - it's much harder to connect a device that is located on the rear of the PC. Another advantage of the hub is that it gives you an option of connecting an external power supply, which is especially handy for devices such as cameras and scanners.
The other upgrade option you can consider is a PCI USB card. Provided you have an unused PCI slot on your motherboard, you can add a PCI USB card, which can give you an extra two to seven ports. One of the major benefits of this type of expansion is that you are not occupying one USB port to add more - as is the case with the USB hub - so you end up with more ports as well as more bandwidth.
Furthermore, if your PC is of the older variety and doesn't have any USB connectivity as yet, you can use the PCI USB card to add it.
The negative? Obviously, all ports will be located at the rear of the system, and you will have to get under the hood of your system to install it - but we'll show you how in just a few steps.
Note: Windows 98 SE provides the best USB support.the top downInstalling a USB hubInstalling a PCI USB adapterParallel to USB cable