How to connect more USB devices to a computer
Updated: 01/24/2018 by Computer Hope
The USB (universal serial bus) specification supports up to 127 devices, which means you could theoretically connect up to 127 different USB devices up to your computer. If you needed more than 127 devices, you could even install another USB card to connect additional USB devices to the computer.
Some users may be under the impression that because the computer only has two or four USB connections that the computer only supports that many devices. To connected even more, consider purchasing a USB hub, which is like a power strip for USB devices. It connects to a single USB port on your computer, but it provides multiple USB connections for your other devices.