Every USB setup has only one host that connects to multiple USB devices or clients through the host controller. It is also the host controller that manages data transfers between the host and USB devices (from the host to the device and vice versa).
When you attach a device to a USB system, it gets assigned a unique address at the time it was connected. The USB device has endpoints, or data buffers, and each endpoint has a pipe where the transfer of data between the USB device and the USB host happens.
Now, USB data is transmitted in packets that are then bundled or grouped into frames to complete a message. In the transmission of data, where it is broken into bytes and bits, the least significant bit always goes out first.
There are four main types of packets:
USB drives offer to store large amounts of data in removable, portable, and durable (sometimes aesthetically appealing) solutions. You surely have ways to access, save, and send files online, but you always have USB flash drives to virtually back up all kinds of electronic files.
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