The ASUS Prime B660-Plus D4 motherboard is designed for casual computing, featuring ATX form factor and LGA 1700/Socket V socket type compatibility with Intel CPUs. With 4 memory slots supporting DDR4 SDRAM, this motherboard offers ample room for expansion with various slots including M.2, PCI Express 3.0 x1, PCI Express 3.0 x16, and PCI Express 4.0 x16. It also provides a range of input/output ports including D-Sub, DisplayPort, HDMI, Ethernet (RJ-45), USB 3.0, USB 2.0, USB-C, and USB 3.1 for connectivity options. Additionally, it features on-board audio for enhanced audio functionality.