CompTIA Security+ Exam Notes

CompTIA Security+ Exam Notes
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Thursday, October 10, 2024

USB 2.0, 3.0, & 3.1

 USB Speeds

USB 2.0 has a maximum data transfer speed of 480 megabits per second (Mbps). It's also known as Hi-Speed USB.

Here are the maximum data transfer speeds for some other USB standards:

USB 1.0/Low-Speed: 1.5 Mbps

USB 1.1/Full-Speed: 12 Mbps

USB 3.0/SuperSpeed: 5 gigabits per second (Gbps) labeled as SS (Super Speed) on the PC

USB 3.1/SuperSpeed: 10 Gbps labeled as SS+ on the PC

USB 2.0 devices can also provide a power output of up to 500 milliamps (mA) at 5 volts. 

USB 2.0


USB 3.0 & 3.1


USB 2.0 Type B & Type B Micro are not compatible with 3.0




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