The ASUS Pro B660M-C D4-CSM MICRO-ATX Motherboard is a robust and reliable motherboard designed for business and professional use. It supports Intel's 14th, 13th, and 12th Gen Core processors, Pentium Gold, and Celeron processors with the Intel B660 chipset. This motherboard features dual-channel DDR4 memory support, with speeds up to 5000 (O.C.)/4800 (O.C.)/4600 (O.C.)/4400 (O.C.)/4266 (O.C.)/4000 (O.C.)/3733 (O.C.)/3600 (O.C.)/3466 (O.C.)/3400 (O.C.)/3333 (O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz and up to 128GB of RAM across four memory slots. For storage, it offers two M.2 slots (Socket 3, M key, type 2242/2260/2280/22110) that support PCIe 4.0 x4 mode, and four SATA 6Gb/s ports, providing ample options for both traditional and modern storage solutions. Network connectivity is provided by Intel 1Gb Ethernet, ensuring smooth and stable internet performance. The audio experience is enhanced with Realtek ALC897 Audio Codec, delivering high-quality sound for your entertainment needs. The back panel I/O ports feature one HDMI port, one VGA port, two USB 2.0 ports, four USB 3.2 Gen1 ports, and three audio jacks (Mic in, Line Out, and Line In). Expansion capabilities include one PCIe 4.0 x16 slot and two PCIe 4.0 x1 slots, allowing for additional hardware components. With its micro-ATX form factor (24.4 cm x 24.4 cm), the motherboard is suitable for compact PC builds, and it includes six mounting holes for secure installation. The comes with a three-year warranty, providing reliability and assurance to the user Overall, the ASUS Pro B660M-C D4-CSM MICRO-ATX Motherboard is an excellent choice for building a powerful and efficient PC for business and professional use.