I just got a new graphics card and with it I needed a new power supply, so I bought a Rosewill Hive 650 modular PSU and I hooked up everything but the seperate (not 20x"4"), but the seperate 4 pin motherboard power cable. I can't find it anywhere. The only cables I haven't used yet are 2 PCI-E cables and 2 SATA cables. How am I supposed to power my motherboard with this? I've seen some cases where somebody got an 8 pin when they needed a 4 pin or vice versa, but I got neither! Am I overlooking something? I really want my computer back