I was wondering if you could help me. I just bought a Dell XPS 8300 system and i bought some LED lights for the case. The lights have a 4pin 12v female and male connector. I just do not know what to plug them into. could you help. I looked for some extra 4pin connectors (inside the case), but couldn't see any.
Those should be 4pin molex connectors looking like this?
Follow all the cables from the PSU and see if there are any tucked away out of sight.
If not, find one connected to something, a case fan for example.
You should be able to daisy chain that connector with your case lights.