Hey Amir, let's work through figuring out a compatible screen for your mystery 30-pin EDP controller—this is a common headache with off-the-shelf or salvaged controller boards, but we can break it down step by step:

• First, dig out any hidden markings on the board
  Grab a magnifying glass if needed and scan both the front and back of the controller (check the images you shared closely!) for any printed part numbers, chip models, or brand logos. The main controller chip (usually a small square IC with pins) is your best bet—look up its datasheet online, and it’ll explicitly list the screen resolutions, eDP versions, and refresh rates it supports. Even partial model numbers can help narrow things down.

• Lock in key screen specs to match
  Since you know it’s 30-pin EDP, focus on these non-negotiables:

  • Resolution & Refresh Rate: Most budget controllers handle 1080p@60Hz, but some support 2K or higher. The chip datasheet will confirm this.
  • eDP Version: eDP 1.2, 1.3, or 1.4—newer versions support higher bandwidth for 4K/144Hz screens. Your controller’s chip will specify which it’s compatible with.
  • Power Requirements: Check if the controller provides 3.3V or 12V power to the screen—mismatching this can fry both the board and screen.

• Cross-check pin definitions
  30-pin EDP has a standard pinout, but some custom controllers tweak pins for specific use cases. Pull up a standard 30-pin EDP pin diagram online, then compare it to the pin labels on your controller’s screen connector. Make sure power, ground, data lanes, and clock lines line up exactly.

• Look for matching community examples
  Head to laptop hardware forums, DIY screen modding communities, or even eBay listings—search for controller boards that look identical to yours. Often, other users will have shared which screens they’ve successfully paired with it, or sellers will list compatible models in product descriptions.

• Test with a low-risk screen first
  If you can get your hands on a cheap, common 30-pin EDP screen (like a 1080p@60Hz laptop panel), do a test connection (double-check power first!) to see if it works. This is a quick way to validate your specs without sinking too much money into a higher-end screen.

Here are the images you shared for reference:

• 控制器背面：
• 控制器正面：

备注：内容来源于stack exchange，提问作者Amir