1. Standard gold fingers (straight fingers)
Arranged neatly along the edge of the board, rectangular pads of equal length and width. Commonly used for network cards and graphics card types. These gold fingers are more numerous.
2. Long-short gold fingers (coreless gold fingers)
Rectangular pads of varying lengths on the board, often used for physical objects such as memory, USB drives, card readers, etc..
3. Segmented gold fingers (interrupted gold fingers)
Rectangular pads of varying lengths cut off at the front along the edge of the board.