Is my PSU not compatible with my motherboard

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Guest

Guest
So i have this and this (its a 4-pin ATX 12 V, at least this is what i found) plug on my motherboard. So i bought recently a new 600W PSU (Chieftec GPS-600A8 to be exact) and i dont have the 4 pin connector thingy, so i just connected the regular, long one and turned my pc on. It had power but no screen, also the VGA's cooler was spinning. Thanks for the answers and sorry for bad english