MSI B450M GAMING PLUS Motherboard (MS-7B87 v:1.1) B450 AM4 2 DDR4. Key Specifications (MSI B450M Gaming Plus - MS-7B87). 2x DDR4 DIMM slots, Dual Channel, max 64GB. Max:64GB HDMI+DVI ATX. Often requires updates (such as to version 7B87v1C) to support newer Ryzen CPUs.