CAC-1070 and 1170 HDMI 2.0 adapter feedback topic.

Updated 15 hours ago in Adapters and Cables
5 on 27-09-2017

I’ve been using CAC-1170 to connect my MacBook Pro 2015 with Sony X800D for nine months and this adapter is very finicky. It took me several hours to get it playing nice with El Capitan using SwitchResX. It stopped working when I upgraded to Sierra and I had to go through the same process again. Couple of months ago, I was away for a month, and when I came back and turned it on, the screen shows just a green bar on the top, and only shows the content when I reduce refresh rate to 30Hz. [email protected] doesn’t work anymore.

on 27-09-2017

What version of OS are you on now ?

on 29-09-2017

I’m still on Sierra (10.12.6)

on 29-09-2017

Hi michaelm,

That should work.
Did you check if the TV is still on “enhanced mode”?
Also we have heard of users needing to make a clean install of the SwitchResX version or even making a new user …

on 30-09-2017

so this is how i think i got 3840×2160 at 60hz working. i have extended desktop and my tv is the primary desktop and my laptop with intel hd 4600 is secondary. So tv is 3840×2160 and laptop is 1080p.
i did the custom display thing but where in the intel hd 4600 graphics panel it says scaling i choose the last box that says “centre the picture?”,not the first one that says “keep the scaling”. My sony 65 tv still informs me its 1080p but windows and intel says 3840×2160.

on 03-10-2017

thanks for the feedback šŸ™‚

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1 on 06-10-2017


GPU: GTX 770 (few model tested)
Monitor: TV Panasonic TX-40AX630E (all settings changed/tested)
OS: Windows 10 Ent. 1607
Nvidia – lastest drivers

With hdmi cable i get 4k 3840×2160 60Hz, but with CAC-1070 get blue screen (not BSOD)… light-blue screen. Only can run 30Hz, but after change to 60Hz stop working.
Trying with few GTX 770 cards and few HDMI cables who make 4K 60Hz over HDMI.

on 09-10-2017

Hello gosheto,

Sorry but your GTX770 is a Kepler GPU Graphics card and thoseĀ  do not work very well together with active adapters like the CAC-1070.
You could try with clean driver install and making a custom resolution for 3840×2160 at 60Hz with Timing Standard set to CVT-RB for use with a 4K TV.

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