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2. The best USB hubs for charging your stuff - AOL

   www.aol.com/lifestyle/best-usb-hubs-charging...

   We're all in the same situation: so many gadgets that are charged by a USB connection and not nearly enough ports to keep them charged. I've got my phone and mouse connected to my laptop, a number ...

3. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   To allow for voltage drops, the voltage at the host port, hub port, and device are specified to be at least 4.75 V, 4.4 V, and 4.35 V respectively by USB 2.0 for low-power devices, [a] but must be at least 4.75 V at all locations for high-power [b] devices (however, high-power devices are required to operate as a low-powered device so that they ...

4. Universal charger - Wikipedia

   en.wikipedia.org/wiki/Universal_charger

   This document specified the three components of a common charging solution (CCS): a charging and local data connector (CLD) on the "terminal" (e.g., a mobile phone) consisting of a micro USB-B (2.0) or micro USB-AB (2.0) receptacle; a common power supply (CPS) with a USB type-A receptacle; and a detachable USB type-A to micro USB-B (2.0) cable ...

5. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   For USB devices up to USB 2.0 a unit load is 100 mA (or 500 mW), while USB 3.0 defines a unit load as 150 mA (750 mW). Full-featured USB-C can support low-power devices with a unit load of 250 mA (or 1250 mW). Devices that draw more than one unit are high-power devices (such as typical 2.5-inch hard disk drives). USB up to 2.0 allows a host or ...

6. USB hub - Wikipedia

   en.wikipedia.org/wiki/USB_hub

   A four-port "long cable" "external box" USB hub A four-port "compact design" USB hub: upstream and downstream ports shown. A USB hub is a device that expands a single Universal Serial Bus (USB) port into several so that there are more ports available to connect devices to a host system, similar to a power strip.

7. USB4 - Wikipedia

   en.wikipedia.org/wiki/USB4

   USB4 enables multiple devices to dynamically share a single high-speed data link. USB4 defines bit rates of 20 Gbit/s, 40 Gbit/s and 80 Gbit/s. [ 1 ] [ 2 ] USB4 is only defined for USB-C connectors and its Type-C specification [ 3 ] regulates the connector, cables and also power delivery features across all uses of USB-C cables, in part [ 4 ...