ASRock B450M STEEL LEGEND Socket AM4/ AMD Promontory B450/ DDR4/ Quad CrossFireX/ SATA3&USB3.1/ M.2/ A&GbE/ MicroATX Motherboard
Brand: ASRock
Chipset: AMD Promontory B450
Slots: 3x PCI-Express 3.0 x16 Slots (one runs at x8, one runs at x4), 3x PCI Express 2. 0 x16 Slots (run at x4), 1x PCI Express 2. 0 x1 Slot
Multi-graphics: Supports AMD Quad Crossfire and Crossfire Technology. OS - Microsoft Windows 10 64-bit
Audio: Realtek ALC892 7. 1-Channel High Definition Audio CODEC with content protection