usb 2.0 can support 127 devices
Linux distributions can support hundreds of thousands of devices and programs, far too many to list.
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All major operating systems support USB devices.
In theory a single hub of USB can support 127 devices. In practice, this will not actually occur. Most computers do not have enough power to drive that many devices. A reasonable number would be about 20.
Windows 98 does not include drivers for USB Mass Storage devices. A generic driver is available, however.
Try for yourself!
Most Linux distributions including CD and USB do support wireless adapters. The problem is that not all adapters are supported.
both support hot-swapping devices
Yes. USB can support 127 devices per port which allows for daisy chaining.
Yes. Your motherboard determine support for USB 3.0 . Your USB 3.0 devices can still be used in a USB 2.0 port but not with the upgraded speed. And USB 2.0 can be used in USB 3.0 port with it's original speed. Often USB 3.0 is marked with the color blue.
The USB drive can be located inside the "computer folder" which can be accessed under the system tab on the task bar of the fedora desktop. It shows the detected USB devices as soon as you plug it in.