ASUS PRIME B450M-A II AMD AM4 Socket AMD Ryzen 2nd Generation/Ryzen with Radeon Vega Graphics/Athlon with Radeon Vega Graphics/Ryzen 1st Generation Processors AMD Ryzen 2nd Generation/Ryzen with Radeon Vega Graphics/ Athlon with Radeon Vega Graphics/ Ryzen 1st Generation Processors 4 x DIMM Max. 32GB DDR4 3466(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory Dual Channel Memory Architecture ECC Memory (ECC mode) support varies by CPU Integrated Graphics in the AMD Ryzen with Radeon Vega Graphics/ Athlon with Radeon Vega Graphics Processors Total supports 1 x M.2 slot(s) and 6 x SATA 6Gb/s ports Multi-VGA output support : HDMI/DVI-D/D-Sub ports Supports HDMI 2.0b with maximum resolution of 4096 x 2160 @ 60 Hz Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz Supports D-sub with max. resolution 1920 x 1200 @ 60 Hz Expansion slots: AMD Ryzen 2nd Generation/ Ryzen 1st Generation Processors: 1 x PCIe 3.0/2.0 x16 (x16 mode) AMD Ryzen with Radeon Vega Graphics Processor: 1 x PCIe 3.0/2.0 x16 (x8 mode) *1 AMD Athlon with Radeon Vega Graphics Processors: 1 x PCIe 3.0/2.0 x16 (max at x4 mode) AMD B450 chipset: 2 x PCIe 2.0 x1 Realtek RTL8111H 1 x Gigabit LAN Controller(s) ASUS LAN Guard Back I/O Ports: 1 x PS/2 keyboard/mouse combo port(s) 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port(s) 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jack(s) 1 x BIOS FlashBack Button(s) 90MB15Z0-M0EAY0