LG Ultrawide (34UM61-P) resolution problem on late 2012 Mac Mini

I'm sure the only issue in the LG monitor is the type of connection and the resolution the connection supports on a Mac

Here is a 34"Ultrawide LG monitor that does have a DP connection. I would almost guarantee it would support the max resolution of 2560X1080 with a mini DP to DP cable which you want.

As to what "Active" means, I could not tell you. I only know it works for me in a similar situation.

The HDMI problem is created by the way Windows and Mac handle HDMI.

I'm sure I suggested you try the Amazon handled mini Displayport to Active HDMI adapter. If so, did you try it?

Amazon is good about taking back items that don't work.

I have a HP Envy 34 UltraWide which I connected with a Displayport to mini Displayport cable and I got max 2560 X 1440 resolution.

On Late 2012Mac mini HDMI is limited to1920 X 1080 so you need something to override the limitation. On my regular UHD flatscreen I can get 3840 X 2160 resolution even though Apple says it is not supported, so might worth a try, at least Amazon will take it back.

There has to be a difference in the 2 cables. The name with Active inserted and the price. I have no experience with the smaller resolution monitor but unless it is absolutely imperative the adapter comes tomorrow you waited this long trying to get to work, although frustrating, a few more days shouldn't hurt.

Have you thought of exchanging the monitor with a similar one that has a DisplayPort connection?

You know, I wholeheartedly agree with you as far as doing business with certain companies. I would rather do without than compromise my values. Amazon and Walmart(don't snicker) I utilize probably for 95% of my online ordering. Their return policy, interest-free financing, and support I feel are second to none and will keep me as a customer. It's strictly a matter of opinion.

As I said in my previous post, many brands will advertise as compatible with Mac but they are not necessarily optimized for Mac meaning they will operate on a Mac but not at the full extent possible.

As a PS to your previous message Amazon does not charge for shipping on items over $25 I believe and return postage has always been paid by Amazon, unless you desire something faster than the free shipping time.