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2. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   Since these currents are larger than in the original standard, the extra voltage drop in the cable reduces noise margins, causing problems with High Speed signaling. Battery Charging Specification 1.1 specifies that charging devices must dynamically limit bus power current draw during High Speed signaling; [52] 1.2 specifies that charging ...

3. Quick Charge - Wikipedia

   en.wikipedia.org/wiki/Quick_Charge

   Qualcomm claims Quick Charge 3.0 is up to 4–6 °C cooler, 16% faster and 38% more efficient than Quick Charge 2.0, and that Quick Charge 3.0 with Dual Charge+ is up to 7–8 °C cooler, 27% faster and 45% more efficient than Quick Charge 2.0 with Dual Charge. [4] Quick Charge 4 was announced in December 2016 for the Snapdragon 835 and later ...

4. USB On-The-Go - Wikipedia

   en.wikipedia.org/wiki/USB_On-The-Go

   USB OTG is a part of a supplement [2] to the Universal Serial Bus (USB) 2.0 specification originally agreed upon in late 2001 and later revised. [3] The latest version of the supplement also defines behavior for an Embedded Host which has targeted abilities and the same USB Standard-A port used by PCs.

5. Mobile High-Definition Link - Wikipedia

   en.wikipedia.org/wiki/Mobile_High-Definition_Link

   The standard supports the simultaneous transfer of data (at least USB 2.0, and depending on video resolution: USB 3.1 Gen 1 or 2) and power charging (up to 40 W via USB Power Delivery), in addition to MHL audio/video. [2] This allows the connection to be used with mobile docks, allowing devices to connect to other peripherals while charging ...

6. USB-C - Wikipedia

   en.wikipedia.org/wiki/USB-C

   Cable length should be 2.0 m or less for Gen 1 and 1.0 m or less for Gen 2. Thunderbolt Type-C to Type-C active cable Thunderbolt 3 (40 Gbit/s) Alternate Mode with cables longer than 0.8 m requires active Type-C cables that are certified and electronically marked for high-speed Thunderbolt 3 transmission, similarly to high-power 5 A cables.

7. USB 3.0 - Wikipedia

   en.wikipedia.org/wiki/USB_3.0

   In USB 3.0, dual-bus architecture is used to allow both USB 2.0 (Full Speed, Low Speed, or High Speed) and USB 3.0 (SuperSpeed) operations to take place simultaneously, thus providing backward compatibility. The structural topology is the same, consisting of a tiered star topology with a root hub at level 0 and hubs at lower levels to provide ...