New case. Front Panel audio output not functioning properly

Essentially the title explains the issue. I bought a new case b/c my old case's audio jacks went out. (I wanted to upgrade to a full tower anyways) Rebuilt my computer into the new case, audio in the back works perfectly fine, but audio in the front only works in the right side. I've tested the headset on multiple devices and it works perfectly fine. I don't however have multiple headsets to test the front panel.

What I've checked;

-Drivers
-To see if the cable is firmly plugged in (I don't think I would be getting any sound if it wasn't)
-cleaned both audio jacks, didn't make a difference
-Speaker properties to see if the levels were correct
-Realtek audio manager to see if levels were correct
-No enhancements in either properies or manager are enabled.
-I used the troubleshooter, didn't work

Specs;
i5 3.00 Ghz core
MSI Z77A-G41
960 Nvidia GTX 3.5GB
Corsair 850w power supply
120GB SSD
2TB HDD

Check the connections on the motherboard are correct?

I have it plugged in correctly, but I'll double check it to confirm it to absolutely mark it off.

*Update*
So I unplugged it, checked for bent prongs, any corrosion (Its a old motherboard), it was plugged in correctly, but I went ahead and plugged it back in like I had it. However, it works now, but here is the weird thing. I have a splitter designed for a phone, but the audio input is the same 2 ring, 3.5mm jack. This is where it gets interesting, with the splitter, the left works, but the right doesn't, where before it was the opposite with the splitter. I need the splitter to be a ble to use my mic. (Razor blackshark)