Am4 Pinout Diagram |link| -

AMD AM4 socket features a Pin Grid Array (PGA) design with 1,331 pins

SATA signals (up to 4 ports) are also routed through the CPU to the FCH. Look for pins SATA_TX_P/N and SATA_RX_P/N around rows V and W. am4 pinout diagram

Why is the AM4 Pinout Diagram Important? AMD AM4 socket features a Pin Grid Array