The connection of the graphics card refers to the connection between the graphics card and the slot, and all signals are transmitted through the connection finger. The golden finger consists of many golden conductive contacts, which are called "golden fingers" because of their gold-plated surfaces and finger-like arrangement of conductive contacts. The gold finger is actually plated with a layer of gold on the copper clad laminate through a special process, because gold has strong oxidation resistance and strong conductivity. But because of the high price of gold, tin plating is often used instead. Since the 1990s, tin materials have become popular, and almost all graphic devices "Golden Finger" are made of tin materials. Only some high-performance servers/workstations will continue to use gold plating, which is naturally expensive.
Generally speaking, if you are doing computer hardware maintenance, you will often mention the golden finger, which actually refers to the connection parts between cards and slots such as memory, graphics card, sound card and network card. Generally, we can gently wipe it with an eraser, which can reduce the oxidation degree of the golden finger, thus improving its connection performance and solving the problem of a small amount of hardware connection.