USB

Question 1

What are the types of USB connectors?

Answer 1

USB has only five valid connector types: Type A, Type B, Type C, Mini-, and Micro-USB.

A - the original type. You use it to plug into computers.
B - plugs into smaller devices. A weirder shape.
C - used for high speed data transfer, either direction it will work.
Mini-B - for video recorders and camera connections
Micro-B - skinny, more flat, used for Android phones

Question 2

What are the capacity standards for USB (universal serial bus)?

Answer 2

1. 1.0, which is 1.5 megabits a second
2. 1.1, which is 12 megabits (mbps)
3. 2.0, which is 480 megabits a second (mbps)
4. 3.0, which is 5 gigabits per second (gbps)
5. 3.1 Gen 1, which is 5 gigabits per second
6. 3.1 Gen 2, which is 10 gigabits per second (gbps)

Question 3

USB is backwards compatible, which means:

Answer 3

can successfully use interfaces and data from earlier versions of the system or with other systems

Question 4

What is upstream vs. downstream regarding USB controller and USB?

Answer 4

• The actual controller in the motherboard sends downstream commands to the USB device plugged in the computer via the USB cable.
• Each controller is designed to fit different versions of USB.
• Downstream means that something plugs into the computer.
• Upstream means that something plugs into the device that wants to communicate with the computer.