So, I have a question about what what computer conponents need what PSU cables. At the moment, I have a motherboard (obviously, lol) a bluray reader, and an HDD 2 TB. So for the motherboard, I would need an 8 pin for the CPU and a 24 pin to power the motherboar itself. And 2 sata cables for the bluray player and the HDD itself, correct? When I look into my HDD I see 2 connectors. One seems to be either a SATA or molex and another cable going into the HDD. If I'm not mistakened, thats probably the same conditions for the blu-ray player as well. Can someone shine the light on what it is? And lastly, the on and off switch. Do I need to replace those? Or do they go directly to the MOBO? Thats my last question. Sorry about all that, i'm nervous about replacing my psu, and what to do.