USB-C Digital AV Multiport Adapter - Capabilities

Discussion in 'MacBook' started by ctyrider, Mar 20, 2015.

  1. ctyrider macrumors 6502a


    Jul 15, 2012
    I have been wondering about the capabilities of Apple's $79 USB-C digital dongle. Apple's product page describes its intended use case like following:

    What I am wondering about if this is the only supported use of this dongle, or if other scenarios possible.. For instance - feeding power to MacBook via USB Type-A port (via Type-A to Type-C cable), and using USB-C port to connect to a monitor via DisplayPort Cable.

    Basically, I don't care about HDMI port - I want to connect MacBook to 1440p (or maybe even 4K) display, while charging it at the same time.

    If this dongle is a proper USB-C dock supporting DisplayPort Alt Mode - that should be possible.. and will in fact make it not such a bad purchase.. I am hoping this is why Apple is pricing it at $79, as it's a lot more than just a dumb adapter cable.

    I suspect no one truly knows yet, but can't help but wonder..
  2. Steve USB macrumors newbie

    Mar 17, 2015
    If you are referring to the "USB-C Digital AV Multiport Adapter", the description is:

    The USB-C Digital AV Multiport Adapter lets you connect your MacBook with USB-C port to an HDMI display, while also connecting a standard USB device and a USB-C charging cable.

    The Type C port on the MacBook provides Display Port, which is converted in the Adapter to HDMI.

    The Type C port on the adapter supports only power, no USB2, no Display port.

    The Standard A is USB3.1 Gen 1 (the old USB 3.0).
  3. ctyrider thread starter macrumors 6502a


    Jul 15, 2012
    How do you know this? I think until someone actually tries this - this is very unclear.
  4. Theophil1971 macrumors 6502


    Mar 20, 2015
    Ya, I'm not sure that follows, either. It's possible that the Type C port on the adapter is a full-pinned pass-through. If so, it may stand to reason that it supports data also, and thereby will allow a DisplayPort to USB-C connection down the road, if someone markets a cable for it.
  5. ctyrider thread starter macrumors 6502a


    Jul 15, 2012
    Someone already does - Google USB Type-C to DisplayPort Cable
  6. cfedu macrumors 65816


    Mar 8, 2009
    This does not look like the cable for you. You will not be able to power the macbook with USB A port.

    The cable you would need would have either 2 USB C ports (plus a USB C to DP adapter, once available),or an adapter with USB C and MDP.

    I'M sure there will be nice docking stations in the no to distant future. Depending on your required mobility, that my work best.

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