2133 Mhz, 2400 Mhz, 2666 MHz, 2800 MHz, 3000 Mhz, 3200 Mhz, 3466 Mhz, 3600MHz, 3866 MHz, 4000 Mhz, 4133 MHz, 4266 Mhz, 4400 Mhz, 4600 MHzAm4Micro AtxDDR44https://www.asus.com/tr/Motherboards-Components/Motherboards/PRIME/PRIME-B550M-K/128 GBYokD-Sub, Usb 2.0, Usb 3.2, 2xM.2, Dvi, Hdmi, Ps2, Lan, Ses1Amd B5501