FAT4 "Molex" connector FEMALE with 8 crimp terminals.
People often call this connector "Molex" connector, which is wrong. A long time ago, the MOLEX company created the specification for this connector type, as they did to a thousand other connector types. The MOLEX company has stopped manufacturing this part a long time ago, as it officially became end of life. Somehow this connector type never died though and other companies had to continue making it.
This 5 1/4" device power connector (that's what it was called officially) comes in the FEMALE version with 8 crimp terminals, twice as much as you need.