apple cinema display hd 30"

Hi everyone -- I just purchased two 30" Apple Cinema Displays. I am using two USB-C to Dual-Link DVI adapters to plug each of the Cinema Displays into my 2021 MacBook Pro M1. One display works perfectly -- it is detected by my MBP M1 as "Cinema HD" and works instantly. The other display is...

So this week the power brick to my 30" Apple Cinema display decided to stop working. It's overheating and I hear a clicking coming from it while my monitor no longer turns on. I've looked for replacements but they're all but impossible to find (new that is). I've come across these Chinese...

Looking for a method to use my rMBP GT 750m as a desktop replacement. Apple advertises the system as "able to drive 2x displays at 2560x1600" however, I have been able to get 2x 2560x1600 (dual MDP) and 1x 1280x800 (over HDMI). Given the system can drive 2x 4K Displays (~16.58 million pixels)...