It has a theoretical maximum speed of 20 Gbps. The latest of these standards, USB 3.2 was released in September 2017. Also called SuperSpeed+, USB 3.1 has a theoretical speed of 10 Gbps. In 2013, its successor, USB 3.1 was released. In recent years, much faster USB standards were introduced. However, to ensure the fastest transmit rate possible, both devices that you want to connect should have support for USB 3.0. But USB 2.0 Micro-A plugs are compatible with USB 3.0 Micro-AB receptacles.

Micro-A and B are compatible only with USB 3.0 Micro-AB receptacles.But these older standards are compatible with USB 3.0 receptacles. Type-B connectors are not compatible with older Type B USB standards.Type-A connectors are compatible with USB 2.0 or USB 1.1 receptacles or plugs.Some devices, cables, or adapters with older ports support may be compatible with USB 3.0 receptacles, but it depends on the connector type. They are compatible with Micro-A receptacles and are also used for smartphones and small portable devices. These look like the USB Micro-A type, with the thin and two-part design. If you want to know more about how to charge your phone faster, check out our previous blog here. While USB 2.0 caps out at around 0.5 Amps, a USB 3.0 charger can deliver around 0.9 A of power. In fact, a USB 3.0 charger can deliver almost double the output of a USB 2.0 charger. You can also charge your devices faster with a USB 3.0 connection. That means USB 3.0 is 225% faster vs USB 2.0 for transferring files. With USB 3.0, it would only take roughly 87 seconds to transfer the same file.

That means it would take around 282 seconds (or almost five minutes) to transfer a 10GB file. Real-world tests show that USB 2.0 can transfer files at a speed of 35.4 Mbps (megabits per second). That may not sound fast, but it’s actually 10 times faster than USB 2.0. That’s roughly 87 seconds (or about a minute and a half). According to a test conducted by Macworld, a 10GB file can be transferred to a hard drive using USB 3.0 at 114.2 Mbps.

In real-world tests, USB 3.0 transfers files much slower than its theoretical speeds. This means an HD movie around 1.5GB in size can be transferred from one device to another in less than a second using it (theoretically). USB 3.0 comes with a theoretical transfer speed of 5 gigabytes per second (Gbps).

Usb 2 vs usb 3 picture quality