Do I need a power hub for MacBook Pro with USB-C?

Benjamin Kim

• 2. August 2019 23:28

Since USB-C can power up to 100W, I just wonder if I need a power hub powered by AC port or USB for tethering? I always have a problem with connection issue due to power issue with USB 2.0 cable but I never used USB-C tether cable with USB-C port.

If MacBook Pro with USB-C can power enough to the camera directly, do I need to get a power hub? Tetherbooster seems to be useless with USB-C I think. If I still need a power hub for tethering, any reasons why?

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  Permanently deleted user

  • 3. August 2019 16:55

  That's a bit of a misconception. USB-C can recieve power from an external source and therefore you can often use it to power/charge a device. But that does not mean that every device that has a USB-C port can power another device with 100W.
  
  If a MacBook were to deliver 100W to any device plugged into the USB-C port the batteries would run dry in a very short time and the heat produced would be considerable!
  
  So most likely you'd need a hub if you worry about power constrictions.
  
  However you should keep in mind that the recommended length of a USB 3 cable is a lot shorter than the recommended length of a USB2 cable. So even if more power is transmitted that odes not mean signal degredation will be eliminated.

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  Benjamin Liddle

  • 5. August 2019 15:56

  NN635412303032341950UL wrote:
  If MacBook Pro with USB-C can power enough to the camera directly, do I need to get a power hub? Tetherbooster seems to be useless with USB-C I think. If I still need a power hub for tethering, any reasons why?

  
  
  The MBP/Camera power negotiations can be unreliable. If you have the option, going with a powered hub is going to be more reliable in terms of power delivery, as well as battery life on the MBP.

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