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StarTech University offers computer enthusiasts and IT professionals a chance to learn more about new technologies and innovations in the IT world. Take some time to review the material, then pass the exam to earn your printable certificate for each course.

Course 6: SuperSpeed USB 3.0

Chapter 4: USB 3.0 Plugs and Receptacles

Much like its predecessors, USB 3.0 will offer a variety of plug and receptacle types. As defined by the most recent revision to the standard, USB 3.0 will employ the following plug and receptacle types:

Receptacle (Port) Plug (connector) Accepted Notes
USB 2.0 type 'A' USB 2.0 type 'A'
USB 3.0 type 'A'
A USB 3.0 'A' plug can be inserted into a USB 2.0 'A' receptacle
USB 3.0 type 'A' USB 3.0 type 'A'
USB 2.0 type 'A'
Defined as the 'host connector'; same shape as the USB 2.0 'A' connector, with a different internal pin structure
USB 3.0 type 'B' USB 3.0 type 'B'
USB 2.0 type 'B'
Used for large, stationary peripherals such as external hard drives, printers; A USB 3.0 'B' plug cannot be connected to a USB 2.0 'B' receptacle
USB 3.0 Powered type 'B' USB 3.0 Powered type 'B'
USB 3.0 type 'B'
USB 2.0 type 'B'
Allows a USB 3.0 device to provide power to a USB adaptor, without having to use an external power supply
USB 3.0 type 'Micro B' USB 3.0 type 'Micro B'
USB 2.0 type 'Micro B'
Used for small handheld devices; a USB 2.0 'Micro B' plug will work in a USB 3.0 'Micro B' receptacle
USB 3.0 type 'Micro AB' USB 3.0 type 'Micro B'
USB 3.0 type 'Micro A'
USB 2.0 type 'Micro B'
USB 2.0 type 'Micro A'
The USB 3.0 'AB' receptacle is the same shape as that of USB 3.0 'Micro B', with a different internal pin structure; used on USB 'OTG' (On The Go) products

 

Figure 4: USB 3.0 A-B Cable

The USB 3.0 standard also defines several different types of cable assembly, to provide the connection between USB 3.0 host and peripheral devices. Some examples include:

 

Next — Chapter 5: USB 3.0 Device Availability