Now you have a bulletproof charger in your hands. Just close her up, give her a test run and you're good to go. No more unrecognized charger error, no more plugged in but not charging, no more of Dell's BS limp mode. Your charger will recognize properly and will charge properly.

P.S. I'm sorry that it's such a crappy tutorial, wish I actually took pics along the way to make it better... Honestly, I just put this out here, because it had me scratching my head for hours and there's no info on it online. So I had to DIY it. Hopefully this guide can help someone else who bought a cheapo universal charger and it didnt work...

P.P.S. With a 90W U charger, the cables are more than adequate for 130W, but I wouldnt go pushing 160W through it if I were you... So use this guide at your own discretion. It's mainly to inform people of what the "data" pin does (literally JUST says 'Hi, I'm a dell charger') and that U chargers bypass that by putting it in the bits.