Many computers that were manufactured in the past two years have USB ports. Look at the back or side of your computer. Most of the ports have rows of small pins or pinholes where new peripherals can be plugged in. The USB port looks slightly different. It has no obvious pins or pinholes.
Many computers have two USB ports.
If your computer doesn't have a USB port, you can add one by buying an inexpensive adapter card that fits into a PCI slot in your computer. If you have a notebook computer, you can purchase a USB port that fits into the card slot. However, you should be aware that USB devices can use a lot of your computer's power. However, if you plan to run your portable computer on its batteries, a USB device can be a power drain on the batteries. Remember that if you decide to add a USB port you will want to upgrade to Windows 98 to make your USB experience a pleasant one.