AMD B450 micro ATX motherboard features M.2 support, USB 3.2 Gen 1 Type-A, 1 Gb Ethernet, HDMI/DVI-D/D-Sub, BIOS FlashBackâ¢. Prime B450M-K II caters to daily users and all builders looking for well-rounded specs and a range of options for performance tuning via intuitive software and firmware.