Just a curious question. I was plugging in my psu to my motherboard and realized my 8 pin connector was too short to reach the 8 pin slot on my motherboard. My 4+4 pin could reach so I thought I would just use that. I just happened to notice that when you place the 4+4 next to the 8, they aren't identical. The bottom 2 pins of the 8 pin are square while on the 4+4 one corner has a square while the other corner has the rounded off pin. I was just curious as to why that is?