USB Standards
Delivered April 28, 2020. Contributor: Kej A.
Goals
To provide a summary of USB standards, including power management, physical connectors, and data management, and how these standards change from one version to another.
Early Findings
- USB standards are implemented by the USB Implementers Forum (USB-IF) "founded by the companies that developed the USB standard and now want to sue and develop it." This corporation "develops and maintains the USB standards, including Wireless USB, and runs a compliance program to maintain the quality of USB products and ensure compatibility between devices."
USB 4
- The USB 4 has a max. data transfer speed is 40Gbps and is based on Thunderbolt 3 specification.
USB 3.2 Gen 2x2
- The most recent USB version 3.2 Gen 2 was introduced in 2017.
- Its max. data transfer speed is 20 Gbps.
- The stipulated connector type is USB-C**.
- Its cable length is 3m, and the maximum power capacity is 100w.
USB 3.2 Gen 2
- The USB 3.2 Gen 2 was introduced in 2013.
- Its max. data transfer speed is 10 Gbps.
- The stipulated connector types are USB-A, USB-B, USB Micro-B, and USB-C**.
- Its cable length is 3m, and the maximum power capacity is 100w.
USB 3.2 Gen 1
- The USB version 3.2 Gen 1 was introduced in 2008.
- Its sax. data transfer speed is 5 Gbps.
- The stipulated connector types are USB-A, USB-B, USB Micro-B, and USB-C**.
- Its cable length is 3m, and the maximum power capacity is 4.5w.
USB 2.0
- USB version 2.0 was introduced in 2000.
- Its max. data transfer speed is 480 Mbps.
- The stipulated connector types are USB-A, USB-B, USB Micro-A, USB Micro-B, USB Mini-A, and USB Mini-B.
- Its cable length is 5m, and the maximum power capacity is 2.5w.
USB 1.1
- USB version 1.1 was introduced in 1995.
- Its max. data transfer speed is 12 Mbps.
- The stipulated connector types are USB-A
and USB-B.
- Its cable length is 3m, and the maximum power capacity is 2.5w.
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