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This can usually appear as "4K High Speed HDMI cable with Ethernet (and Audio Return Channel)" or similar.

But the Ethernet is useless connecting the cable to the Mac.

Yeah I don't need the ethernet feature. Okay well I'm not ready to buy a 4K TV yet. Just getting all the needed info.
 
Yeah I don't need the ethernet feature. Okay well I'm not ready to buy a 4K TV yet. Just getting all the needed info.
So if you see "4K High Speed HDMI 1.3 cable" it's OK.

I think cables listed with a higher HDMI version number are usually more expensive just because people are misinformed.

A lower version cable could be less expensive but higher grade.
 
How does the adapter add this functionality?
- It doesn't, strictly. Your machine needs to support it. But on a machine with DisplayPort 1.2 and capable graphics (that is, late 2013 and newer for 15" and Early 2015 for 13"), it adds the ability to output 4K 60 Hz over HDMI, which isn't otherwise present on the machines.
 
- It doesn't, strictly. Your machine needs to support it. But on a machine with DisplayPort 1.2 and capable graphics (that is, late 2013 and newer for 15" and Early 2015 for 13"), it adds the ability to output 4K 60 Hz over HDMI, which isn't otherwise present on the machines.

Mine is a mid-2014 13" rMBP. So mine can't support it?
 
- Doesn't matter. In your case, the limitation is the graphics capabilities of your machine, not the ports.

Hmm okay. So for me to have a bigger monitor it would be better get an actual computer monitor? Even a 1080p computer monitor is a downgrade from a retina display. The image is not nearly as crisp and sharp.
 
Hmm okay. So for me to have a bigger monitor it would be better get an actual computer monitor? Even a 1080p computer monitor is a downgrade from a retina display. The image is not nearly as crisp and sharp.
- An actual computer monitor is always better as a computer monitor than a television. Computer monitors are available in 4K as well, which you can run - just not at 60 Hz. So either 30 Hz 4K or 60 Hz something less than 4K (like 3440 x 1440).
 
But you cannot find a 40" 4K curved 3D monitor. Some TVs have some computer-oriented inputs which bypass processing.

What is annoying with a TV is if you cannot avoid it wanting to shut down after some hours of being switched on.
 
- An actual computer monitor is always better as a computer monitor than a television. Computer monitors are available in 4K as well, which you can run - just not at 60 Hz. So either 30 Hz 4K or 60 Hz something less than 4K (like 3440 x 1440).

Yeah I guess. I guess I'm just trying to have an "all in one" type of set up.

I've looked into monitors with higher res than 1080p but they can get pretty pricy. This is one I've considered.
https://www.amazon.com/gp/product/B...d-3035-4a40-b691-0eefb1a18396&pf_rd_i=desktop
 
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As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
"temporarily out of stock". Plus it's only 1080p. The 13" rMBP is 2560 x 1600 which is a much sharper and clear image. I'd notice the pixels on a standard 1080p panel. Once you go retina you can't go back. LOL
I know it is FullHD, I had to downgrade from 1200 lines for 3D. And I had to buy a 4KTV later because there's nothing in between.

A 48" 4KTV is not retina. It is like 4x 24" FullHD displays, the standard density.

I will go retina with an 8K TV, as 48" is already borderline as a monitor.
 
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