
I have a 2017 version of iMac and am having trouble connecting a second monitor. The adapter they sold me at best seems to have been the problem. This adapter worked perfectly once plugged in! Just received today! No flickering or no input signal errors. I know this adapter is more expensive than others, but with the amount of money that's going to be spent on a new computer and my monitor, I don't think $20 or so is too bad to know that the system will work like this as it should. . If you have a 2017 Imac and want a second monitor then just get this adapter. Save yourself the trouble of getting a cheap product that works. I will update this review if I run into any problems in the future.

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