Final answer:
The 6+2 pin connector in a PC is used to supply power to graphics cards that require extra power beyond the motherboard's PCI Express slot. It can be used as either a 6-pin or combined 8-pin connector.
Step-by-step explanation:
The 6+2 pin connector in a PC is used to supply power to various internal components, particularly to high-end graphics cards that require additional power beyond what can be provided through the PCI Express slot on the motherboard.
The connector is designed to be versatile, where the 6 pins can be used for cards that require a 6-pin connection and the additional 2 pins can be attached to form an 8-pin connection for cards that need more power. This means that the 6+2 pin connector essentially serves as a universal solution to match the power requirements of different graphics cards.