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What Is Difference Between USB 2.0. Vs. 3.0. ? What Is Difference And Which One Is Better?

USB 3.0 is a USB standard with better speed and more efficient power management than 2.0. USB 3.0 is backward with USB 2.0 devices. However, when USB 3.0 communicates with 2.0, the data transfer rate will be limited to USB 2.0 as the USB 2.0 speed is low. The new standard USB 3.1 was announced in 2014 and is expected to be launched by the end of 2015.

Difference between USB 2.0 and USB 3.0

1. USB 2.0 and USB 3.0 Comparison Table

USB 2.0 on the left, USB 3.0 on the right

USB 2.0 and USB 3.0 Comparison Table

What is the data transfer speed when I plug in USB 2.0 on the left, USB 3.0 on the right, and USB 3.0 in the port?

data transfer speed when I plug in USB 2.0 on the left, USB 3.0 on the right, and USB 3.0 in the port?

2. What is USB 3.0 and USB 2.0?

Universal Serial Bus or USB, developed in the 1990s, is a standard for wired connections to computers. USB is used to connect devices (phones, tablets, cameras, camera orders, music players) to the computer. Devices such as smartphones, PDAs, tablets, and handheld gaming devices (such as PS3, PSP...) can be connected to the computer by USB port.

The USB 3.0 is the third official version of the USB standard released in 2008 10 years ago. It upgrades USB 2.0, released in 2000, and can load 500 mAh power at 480 Mbit / s. USB 2.0 5V. The USB 3.0 has a significantly higher power load than USB 2.0, up to 900 MA on 5V. And five years later, the USB 3.1 was announced in 2014 and is expected to be launched at the end of 2015.

3. What is USB 3.1?

USB 3.1 Gen 1

USB 3.1 General 1 (USB 3.1 General 1) is the same as USB 3.0. In fact, with the release of USB 3.1 General 1, all existing USB 3.0 ports have been renamed ASB 3.1 General 1. Today's cables and devices support USB 3.1 General 1. The standard New MacBook Pro has made some changes like the USB Type C connector.

Despite the new name, data transfer and power loading capabilities are still the same as USB 3.0. USB 3.1 Zen 1 supports speeds up to 5 Gbit / s or 625 MB/s and power up to 900 mAh on 5V. USB 3.1 Zen 1 Connector USB 3.0 looks like a connector, blue on the inside. Unlike General 2, General 1 has multiple port types. It has a heavy Type B connector (also known as a printer) and a thin micro-B connector on top. These ports do not have full power support for USB 3.1 General 2.

This standard has been released since July 2013, with a transfer rate of USB 3.1 General 25 Gbit/s, and offers a maximum speed of 10 Gbit / s (1.25 GB/ s). S) General 2 can also load 5000 MA on 20V via a Type C connector.

Only USB Type C connectors can fully handle the general 2 power supply and bandwidth. However, it also has a short cable length limit. Furthermore, devices and cables supporting the new General 2 standard are less common.

About USB Type C (USB-C)


USB Type C is not only a port but ALSO a USB standard. The connector's structure makes some features of USB 3.1 Zen 2 great, but it does not determine transfer speed and power load capacity, but you can use the device instead. Confirm this information at both ends of the cable. But because the documents are not accurate, some buyers often refer to USB 3.1 with USB-C. However, if you buy quality cable s/he with USB Type C connectors at both ends, it will support all the features of USB 3.1 General 2.

USB-C is an impressive port. It replaces all previous connectivity ports, which create universal, powerful connectivity, capable of transmitting up to 5,000 MA safely on 20V.

4. USB 3.0 has superior features over USB 2.0

USB 3.0 has more outstanding features than USB 2.0

Transfer speed: The transfer rate of USB 2.0 is 480 MB/ s and the transfer rate of USB 3.0 is 10 times faster than 4.8 GB / S - USB 2.0.

Additional wires: The number of wires in USB 3.0 doubles from four to eight. Additional wires needed more space in both cable and connection sections, so new connection types were designed.

Power consumption: USB 2.0 gives 500 mA while USB 3.0 gives 900 mA. USB 3.0 provides more power when needed and stores more power when the device is connected but not working.

More bandwidth: Instead of one-sided data processing, USB 3.0 uses two-way data paths, one to get data and one data to get and transmit data when USB 2.0 can process data only. In away.

New feature: A new feature has been added to USB 3.0 (using noddy and ERDY packages) to notify the incompatible device on the server.

When information is transferred via USB 3.0 devices, cables, and connections, the server sends you a request to inform you of how to connect the devices. These devices can either be accepted for connection or ejection (removed).

If accepted, the device sends data or receives information from the server.

If buffer space or data is lacking, it responds with a Not Ready (NRDY)signal - a signal indicates that the server cannot process the request. When the device is ready, it sends endpoint ready (ERDY) to the host, which will then re-connect.

Related: Guide To HDD Vs SSD Difference

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