USB Flashcards
What is a DB 25 Connector?
A D-shaped sub miniature pin that goes into the back of a computer and has two thumb screws on the side.
What is a Serial Cable?
A cable that sends data in ones and zeros in a straight line, but it can only send one bit at a time, which is measured at the speed of cables in bits per second.
What is a DB9 Connector?
A slow speed connection for much older mice, keyboards, and other external modems.
What is the maximum speed of USB 1.0?
1.5 megabits per second.
What is USB 1.1 known for?
Known as full speed and runs at 12 megabits per second.
What is USB 2.0 known for?
Known as high speed and runs at 480 megabits per second.
What is USB 3.0 known for?
Known as super speed and is at least 5 gigabits per second.
What speed does USB 3.1 Gen One run at?
5 gigabits per second.
What speed does USB 3.1 Gen Two run at?
10 gigabits per second.
What speed does USB 3.2 Gen 2x2 run at?
20 gigabits per second.
What is USB 4?
The most modern version of USB and can run at 40 gigabits per second.
What is a requirement for USB 4 and USB 3.2 Gen 2x2 cables?
They must have a shorter cable because that is going to give the best performance.
What happens to cable performance as the length increases?
The longer a cable, the more likelihood that the cable would not work as efficiently, or even at all.
