If my current external HD is HD to USB and i switch the cable to HD to usb-c will it......

Discussion in 'MacBook Pro' started by audirs5, Dec 8, 2016.

  1. audirs5 macrumors 6502

    Oct 20, 2014
    affect the speed of data transfer?

    I see usb type c is faster but i dont get it. is it still usb 3 with just a different form? is it another version of usb? and if so, will my devices still be limited to usb 3 speed even though the cable is now different.

  2. sinoka56 macrumors regular

    Jun 13, 2013
    probably, because of the enclosure and the HD speed.
  3. chabig macrumors 601

    Sep 6, 2002
    You pretty much got it. It's just USB with a different plug. The Type-C plug is called that because it came after the USB Type-A and Type-B plugs. The new connector is meant to be universal and supports more protocols than just USB. But since you're hard drive is a USB hard drive, that's all you're going to get.
  4. scotty588 macrumors 6502

    Jan 2, 2007
    Carlsbad, CA
    Doubt it. Especially those little Western Digital Passport drives most likely have little 5400 RPM drives which are slow anyway.
  5. audirs5 thread starter macrumors 6502

    Oct 20, 2014
    Ok so if i get this right: It's called c because a-b-c just means how the plug looks like, right?

    So then usb 3.1 type c means 3.1 speeds but the plus is c type, right?

    So then explain thunderbolt as well, how does this work?
  6. Pootmatoot macrumors 6502a

    Nov 17, 2014
    Thunderbolt is a different internal protocol (just like, for example, an HDMI and a VGA ports are) but the same plug shape - meaning they can share a port. Therefore Thunderbolt devices and USB-C will use their own data transfer methods. They, err, know what they are. But not in a Westworld sense.
  7. chabig macrumors 601

    Sep 6, 2002
    That's exactly right. USB Type-C is the latest plug. It can carry USB 3 Gen 1 data at 5 Gbps, and USB 3 Gen 2 data at 10 Gbps. Original USB is no longer made, I think, so the USB variants are USB 2, USB 3.1 Gen 1, and USB 3.1 Gen 2. USB 3.0 was a 5 Gbps variety that has been replaced by USB 3.1 Gen 1, though you might still see it listed.

    Thunderbolt is an entirely different, much higher speed (up to 40 Gbps) protocol that uses the same Type-C plug.

    The Type-C plug is designed to be universal. So it can carry USB signals, Thunderbolt, DisplayPort, ethernet, firewire, power, PCI, etc. That can be confusing if you don't understand it. A Thunderbolt connection, for example, requires Thunderbolt capable devices on both ends of the cable. Just because the cable fits, doesn't mean you get Thunderbolt data transfer.

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