This is a new, open box ASUS Prime B660-Plus D4 motherboard designed for casual computing. It has an ATX form factor and supports Intel CPUs with LGA 1700/Socket V socket type. The motherboard has four memory slots that support DDR4 SDRAM. It also has several expansion slots, including M.2, PCI Express 3.0 x1, PCI Express 3.0 x16, and PCI Express 4.0 x16. The input/output ports include D-Sub, DisplayPort, HDMI, Ethernet (RJ-45), USB 3.0, USB 2.0, USB-C, and USB 3.1. The motherboard also features on-board audio.