LG UltraFine 4K Display compatibility with older macbook pros

Yeah, that's a good idea. However, there are lots of models of older macbook pros from various years, configurations

etc, and researching and printing that out would take lots of time, effort and maybe money. The easiest way to do that, and to find that would be to look in your user manual or on either side of your MacBook pro and see what kind of video out connection it has (Thunderbolt, HDMI, DisplayPort, MiniDisplayPort or whatever) and then check on what the display has for video inputs etc.....Hey ! look at that, it does have that information on Apple's webpage and it lists the technical specs for that monitor in there online store. All you have to do is search for it, and scroll down and there it is

Hmmm...USB C and Thunderbolt 3 only? That's different !! soooo...if you don't have a thunderbolt 3 socket on your Macbook pro maybe this monitor may not be right for you.....at least not until someone makes an adapter or some kind of dock for it, and so far (this monitor is pretty new) nobody has not

hope this helps you

John B

From the specs:

Not suprising that it will likely not work with any other Macs. The same

issue occurred when Apple released their Thunderbolt Display. Only

Thunderbolt equipped Macs could use it, nothing older.

The first thing is that how can you connect old mbp to this display. This display only has USB-C input port. Nevertheless, it is 'Display Port alternate mode over USB-C' -- that is, it is a DP port in the physical form of USB-C, along side with charging and USB 2.0 hub.

There is the posibility that you can use a USB-C to DP cable / adapter reversely to connect old mbp to it. The cable has to be a passive cable (without a converter chip). The official 1-to-3 HDMI adapter will definitely not work.

Thanks for the info. Can you elaborate the approach with specifically what adapters and cables would work? How about the following combinations?

USB-C to DP 1.2 active adapter

https://www.amazon.com/gp/product/B018AX3HJO/ref=oh_aui_detailpage_o01_s00?ie=UT F8&psc=1

and Mini DP to DP 1.2 Cable

https://www.amazon.com/gp/product/B0163LN18M/ref=oh_aui_detailpage_o01_s01?ie=UT F8&psc=1

I've asked this bro to make a test

https://www.youtube.com/watch?v=nE2VY0icog0

(see the comments)

I'm not sure what his "I don't think it worked" means.

I tried myself. I can confirm that this monitor does not work with older macs without USB-C. I have tried several cables & adapters based on misleading opinions on various forums. The following is what I have tried so far and did not work.

1. TB3/USB-C (monitor) -> TB2 apple (mac) adapter. This didn't work.

2. miniDP1.2 (mac) -> DP1.2 -> USB-C (monitor). This didn't work.

3. HDMI (mac) -> USB-C (monitor). This didn't work.

The older macs I used are 13" rMBP 2015 and 15" rMBP 2015. I do have a 13" MBP 2016 with touchbar, and the monitor runs beautifully.

I will post this at various places so that others do not buy the monitor based on false hope and eventually return it as I am going to.

Sorry to hear about that.

Theoretically the display accepts DP signal. The problem is whether do currently available cables/adapters work.

Well I was about to say an 'active cable' is not expect to work.