I actually bought a Silverstone PSU because someone on this forum recommended the brand (among others), though not this specific model.
There is definitely no 4-pin. I thought I must be out of my mind, so I checked every single cable like 5 times to make sure. Based on everything I've been told today, I think the way I have it is fine, so the problem must be somewhere else.
All of my fans and LEDs come on, including the LED on the motherboard. No beeps, though. Shouldn't the fans and LEDs work regardless, though, since the 12V is just for the CPU?
Here's the part where people get mad: the mobo has no on-board video, and I haven't installed the video card because I haven't gotten it yet. So maybe that's why it won't POST. Also, I don't remember plugging in a case speaker (because I didn't see one), so that might explain why no beep, right?