

The jack is the female connector, while the plug is the male connector. Jacks and plugs are assigned genders, as per the Association of Electrical & Mechanical Trades. or to up to two separate 4-pin sockets (each can strictly fit the left part of the right connector). The plug, on the other hand, is the part at the end of your headphones’ cable that you stick into the jack.to a single 8-pin socket (that can also strictly fit the left connector, this is what you want to do, I believe),.But Im not sure its actually either one of them. Of course, not all boards feature all types, and things. It vaguely resembles the 'PCIe 8-pin' (or 'GPU') power connector, or the 'EPS-12V' power connector, both of which are standard on PC power supplies. Anyway, if you know the pitch you can search for 1.xx mm board-to-wire crimp connectors. By making the 4+4 part the way it is, they made it possible to connect the right connector: Above we’ve illustrated many of the common motherboard port and connector types. It will be impossible to tell if its 1.27mm or 1.25mm without a good calliper. If you need to connect an 8-pin socket to an 8-pin socket, it shouldn't matter though. The right connector (4+4) is the one you connect to the motherboard. The left connector (8) is the one you connect to the PSU.
#8 pin connector types manual
Refer to the user manual of your PSU to confirm this.

The bottom pins are connected with black cables and are designed for GND.

I guess the upper pins (the terms "upper", "lower", "left" and "right" refer to your original photo) are connected with yellow cables and are supposed to transmit +12V.
