Can I connect it to my 2015 MacBook Pro?

LG UltraFine 5K Display

LG UltraFine 5K Display

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6 Answers from the Community

  • Best Answer:

    I have
    1. 2015 MacBook Pro with AMD Radeon R9 M370X graphics card
    2. Apple Thunderbolt 3 to Thunderbolt 2 adapter
    3. Apple Thunderbolt 2 cable
    4. Mini DisplayPort 2 cable

    However, LG UlltraFine 4K Display does not work with 1+2+3 nor 1+2+4. All I got is black screen. I guess UltraFine 5K is the same.

    Someone said LG UltraFine 4K/5K display uses DisplayPort internally, so maybe a Type-C to Mini DisplayPort adapter should be used instead of a Apple Thunderbolt 3to2 adapter.

  • I took my 2015 MacBook Pro into an Apple Store and asked if I could test this. They let me plug into one on the shop floor, and I can report that it does indeed work at full 5k resolution through a single Thunderbolt cable via the Thunderbolt 3 to Thunderbolt 2 dongle.

    It reported 5120 x 2880 on the second display via the Radeon R9 MX370X.

    This monitor next to it was also working at the same full resolution on a Mac Pro with dual D500 cards.

  • Yes it will. You need the Apple Thunderbolt 3 to 2 adapter, and a Thunderbolt 2 cable. This is per Apple's recent support article explaining how the 5K monitor works. A 2015 MacBook Pro will *not* work with the 4K LG Ultrafine because that monitor does not support connections via Thunderbolt.

  • If you have the 2015 15-inch Retina MacBook Pro, configured specifically with the AMD Radeon R9 M370X, then yes, with the Apple Thunderbolt 3 to Thunderbolt 2 adapter and a Thunderbolt 2 cable. With any other 2015 MacBook Pro, no.

  • Not so much an answer as part 2 of the question: Can someone test this with:
    - MacBook Pro 15" mid-2015 with AMD Radeon R9 M370X
    - Thunderbolt 2 to 3 adapter (the 3 to 2 works both ways according to the store page)
    - Thunderbolt 3 cable

    i.e.: macbook pro thunderbolt 2 -> 2 to 3 adapter -> thunderbolt 3 cable -> lg ultrafine display

    The previous tests that all used thunderbolt 2 cables I think are flawed.

    The MacBook Pro 15" mid-2015 is advertised as specifically supporting Thunderbolt digital video output up to 5120-by-2880 resolution at 60Hz on a single external display (model with AMD Radeon R9 M370X only) - see Apple kb/SP719

  • Maybe with an adapter, but not natively, since this display uses Thunderbolt 3