Gigabyte H610M S2H V2 DDR4 1.0 Intel LGA 1700 mATX Motherboard, 2x DDR4 ~64GB, 1x PCI x16=, 1x PCI=E x1, 1x M.2, 4x SATA, 2x USB3.2, 4x USB 2

The motherboard or mainboard is the component that connects all the different parts of your computer. Often it has some integrated components like a sound card, enabling your computer to play sound, or a network card, to connect your computer to the network. The standard form factor (size) for motherboards is ATX, you need at least a midi-tower to fit one of those in. Micro-ATX motherboards are often more complete and have more onboard devices, like a video board and fit in smaller cases, but are generally less expandable.