Hi! I just bought this display on eBay, and unfortunately, I found that its USB ports do not work. And as such, I can’t...

Ok - I’ve fixed my issue. And I’ll tell my entire process, just in case anyone else happen to run into these same symptoms. Make sure that before you try what I’ve done, you’ve attempted every software-based reset and firmware update that you possibly can, because fixing your problems with a PRAM reset is probably easier than disassembling a display. I started by taking the glass display cover & the display panel off of the monitor. The connector plugged in to the motherboard of the display that had the USB port on the other end is simply a standard USB Mini (male) connector. I took my multimeter, and using the continuity testing mode along with a USB Mini to USB A pinout diagram, I tested all four of the USB A’s pins’ continuities, and lo-and-behold, the Data+ pin failed the test. Before making any crazy jumps from there, I luckily had a 100% functional LED Cinema HD Display (24”) available. From other forums, I’ve discovered that the two do in fact share the same connector cable, although the model...