I was having trouble connecting my DualSense to my MiSTer, no matter what it would not show the green power light. Finally bought a better power supply (5V 5A), and that still didn't work, and then figured out the issue was actually the barrel splitter cable, by testing it with no splitter and using my old and new power supply cables for the MiSTer and USB hub.
So apparently the splitter cable is the problem. Is there a good barrel splitter cable with power switch I can buy somewhere online that can support the proper power to support the DualSense? I look on Amazon and all of them either have the same specs as the splitter I already had that didn't work or they don't have a power switch.
It's weird though because I am using the splitter cable that came with the pre-built Mister addons build, the same cable in the setups of a huge portion of the userbase. Yet I've searched all over online, reddit, this forum, and the discord for other users having similar issues with DualSense, and it seems like I'm the only one who has this issue somehow.