The main difference between USB 2.0 and USB 3.0 is speed. USB 2.0 has a max speed of 480Mbps (Mega bits per second,) which converts to 60MBps (Mega Bytes per second.) … USB 3.0 has a much higher max speed of 5Gbps (Giga bits per second, ie 1024Mbps) which translates . . . Read more

In most cases, you can tell if a USB port is 2.0 or 3.0 by looking for a blue marking at the bottom of the port, if it’s blue, then it’s USB 3.0 or higher. In some cases, all the ports on a device are USB 3.0, but most machines . . . Read more

USB 2.0 device does not work in USB 3.0 port Some USB 2.0 devices do not work in USB 3.0 ports. To fix this, uninstall the USB 3.0 driver in Device Manager. In Windows, search for and open Device Manager. Double-click Universal Serial Bus Controllers to expand the list, and . . . Read more

USB 2.0 Connectors are colored white or black inside while USB 3.0 is colored blue inside. USB 2.0 has 4 connector wires while USB 3.0 has a total of 9 connector wires. USB 2.0 offers a transfer rate of 480 Mbps and USB 3.0 offers speed up to 5 Gbit/s, . . . Read more

Unsurprisingly, USB 3.0 provides greater speeds for transfer of data. … In comparison, USB 2.0 cables can only transfer data at rates of up to 480 Mbps. It should be noted that transfer speeds also depend on the device in use in addition to the bus type and USB ports . . . Read more

USB 2.0 ports are handy for keyboards, mouse controllers, and other non-drive uses. Because these devices do not need the speedy throughput, a keyboard or mouse connected to a USB 3.0 port would be a waste of the resource.

Can you check that your info is correct? PS: A 20-pin USB3. 0 header supports two ports.

USB 3.0 cables facilitate the faster transfer rates of 4.8Gbps as well as the additional power transfer of 900 mA by doubling the amount of wires within the cable from 4 in the 2.0 cables to 8 in the 3.0 cables. USB 2.0 cables transfer data at 480 Mbps and . . . Read more

Are 3.0 USB ports backward compatible? USB connections are backwards compatible. That means older versions will work with new versions, but they’ll only work at their original speed. For example, if you connect a USB 2 hard drive to a USB 3 port, the transfer rate will be USB 2 . . . Read more

Speed — USB 2.0 offers a transfer rate of about 480 Mbps, whereas USB 3.0 offers a transfer rate of about 4,800 Mbps which is equal to about 5 GB. This super-fast transfer speed of USB 3.0 can be especially useful when backing up or transferring large amounts of data, . . . Read more