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  1. How does a USB Hub work? - Electrical Engineering Stack Exchange

    May 29, 2016 · A USB 2.0 interface can run at up to 480Mbps (USB 3.1 can run at up to 10Gbps!), which means that even though the host is only ever talking to one endpoint at any …

  2. How does the USB protocol work? - Electrical Engineering Stack …

    Nov 11, 2015 · Wouldn't this mess up data exchange? And the questions which really hits me in the head is, how does one device "know" if the other device needs power, if the other device …

  3. How do USB to serial adapters work?

    The USB interface (which is a CMC-AMS class) is identified by the PC and it loads the appropriate drives. What these CMC-AMS drivers do is create a virtual serial port, meaning …

  4. How does USB Power Delivery work with voltages above 5V …

    Oct 27, 2016 · I have a Qi wireless charging pad for my phone, powered via a micro-usb port. The markings on it indicate that it will accept the typical 5V that nearly every USB port provides, or …

  5. cables - Why is USB Type-A to USB Type-A never used? - Electrical ...

    Jun 19, 2019 · But this is not what makes USB-A to USB-A cables dangerous. What makes them dangerous is that the USB cable provides power, and USB hosts are in general not designed …

  6. How does USB Type C handle reverse polarity / signal duplication

    Aug 8, 2020 · 38 The new USB Type C connector doesn't have a physical reverse polarity protection any more. You can plug it in any way you want on both ends, there is also no A and …

  7. How do chargers with different output values work?

    Jul 28, 2019 · Devices will negotiate over USB-C connection what voltages they should use. So powerbank can be charged with laptop charger. There is missing information how much the …

  8. How does a USB heating pad work? - Electrical Engineering Stack …

    Nov 20, 2021 · Here is a picture of two USB heating pads: As far as I can understand, 5 V comes from the USB and goes into the curly wires, which produce heat since they are like a long …

  9. Why does this USB-C connection only work in one connector …

    Oct 16, 2023 · I have a setup of devices connected as follows: A B C [laptop]<---<<--->[keyboard] Where <- is a male USB-C connector, >- is a female USB-C connector, [laptop] is a Dell 5470, …

  10. USB, UART, SPI difference and usage? [closed]

    Jun 21, 2016 · USB uses differential NRZ signalling and is thus much more complicated to describe at the wire level. Typically you use USB by adding handler code to a hardware USB …