AMD B550 , SAM4 , Micro-ATX , DDR4 , 4400/4000/3800/3600/3200/2933/2667/2400/2133 MHz , Memory slots 2 , 2xPCI-Express 3.0 1x , 1xPCI-Express 3.0 16x , 1xPCI-Express 4.0 16x , 1xM.2 , 1x15pin D-sub , 1xHDMI , 1xDisplayPort , 6xUSB 2.0 , 6xUSB 3.2 , 1xUSB-C , 3xAudio port , SATA , USB-C , USB 2.0 , USB 3.2 , Video Depending on CPU , Audio Realtek ALC897 , LAN Gigabit , TPM Header