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2. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   [31]: §4.9 Full-Featured USB Type-C devices are a mechanic prerequisite for multi-lane operation (USB 3.2 Gen 1x2, USB 3.2 Gen 2x2, USB4 2x2, USB4 3x2, USB Gen 4 Asymmetric). [31] USB-C devices support power currents of 1.5 A and 3.0 A over the 5 V power bus in addition to baseline 900 mA.

3. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   USB 3.2, released in September 2017, [35] preserves existing USB 3.1 SuperSpeed and SuperSpeedPlus architectures and protocols and their respective operation modes, but introduces two additional SuperSpeedPlus operation modes (USB 3.2 Gen 1×2 and USB 3.2 Gen 2×2) with the new USB-C Fabric with signaling rates of 10 and 20 Gbit/s (raw data ...

4. USB4 - Wikipedia

   en.wikipedia.org/wiki/USB4

   Thunderbolt 3 Gen 2 and Gen 3 and the USB4 Gen 2 and Gen 3 modes use very similar signaling. However, Thunderbolt 3 runs at slightly higher speeds, called legacy speeds, compared to rounded speeds of USB4. [34] It is driven slightly faster at 10.3125 Gbit/s (for Gen 2) and 20.625 Gbit/s (for Gen 3), as required by Thunderbolt specifications.

5. USB communications - Wikipedia

   en.wikipedia.org/wiki/USB_communications

   High speed (HS) rate of 480 Mbit/s was introduced in 2001 by USB 2.0. High-speed devices must also be capable of falling-back to full-speed as well, making high-speed devices backward compatible with USB 1.1 hosts. Connectors are identical for USB 2.0 and USB 1.x. SuperSpeed (SS) rate of 5.0 Gbit/s. The written USB 3.0 specification was ...

6. Extensible Host Controller Interface - Wikipedia

   en.wikipedia.org/wiki/Extensible_Host_Controller...

   The xHCI reduces the need for periodic device polling by allowing a USB 3.0 or later device to notify the host controller when it has data available to read, and moves the management of polling USB 2.0 and 1.1 devices that use interrupt transactions from the CPU-driven USB driver to the USB host controller.

7. USB 3.0 - Wikipedia

   en.wikipedia.org/wiki/USB_3.0

   The USB 3.2 specification added a second lane to the Enhanced SuperSpeed System besides other enhancements, so that SuperSpeedPlus USB implements the Gen 2x1 (formerly known as USB 3.1 Gen 2), and the two new Gen 1x2 and Gen 2x2 operation modes while operating on two lanes.

8. USB-C - Wikipedia

   en.wikipedia.org/wiki/USB-C

   USB 2.0 Billboard Device Class Specification USB 2.0 Billboard Device Class is defined to communicate the details of supported Alternate Modes to the computer host OS. It provides user readable strings with product description and user support information. Billboard messages can be used to identify incompatible connections made by users.

9. USB hub - Wikipedia

   en.wikipedia.org/wiki/USB_hub

   USB 3.1 preserves the existing SuperSpeed transfer rate, giving it the new label USB 3.1 Gen 1, [7] [8] while defining a new SuperSpeed+ transfer mode, called USB 3.1 Gen 2 [9] which can transfer data at up to 10 Gbit/s over the existing USB-type-A and USB-C connectors (1250 MB/s, twice the rate of USB 3.0). [10] [11]