Features • Intel LGA 1700 socket: Ready for 12th Gen Intel processors • Ultrafast connectivity: PCIe 4.0, Intel 1 Gb Ethernet, rear USB (Universal Serial Bus) 3.2 Gen 2 Type-A & front USB (Universal Serial Bus) 3.2 Gen 1 Type-A & Type-C • ASUS Opti Mem II: Careful routing of traces & vias, plus ground layer optimizations to preserve signal integrity for enhanced memory overclocking • Comprehensive cooling: VRM heatsink, M.2 heatsink, PCH heatsink, hybrid fan headers & Fan Xpert 2+ ASUS Prime series motherboards are expertly engineered to unleash the full potential of 12th Generation Intel processors. Boasting a robust power design, comprehensive cooling solutions & intelligent tuning options, Prime B660 provides users & PC DIY builders a range of performance tuning options via intuitive software & firmware features. ASUS PRIME B660M-A D4 offers a sleek, futuristic-looking build with a black & white finish, space-shuttle-inspired design elements, metallic nameplate & PCB cover. FLEXIBILITY Comprehensive controls form the foundation of the ASUS Prime series. The Prime B660 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity. All-Around Energy Efficiency The Energy Processing Unit (EPU) automatically optimizes power consumption & maximizes energy savings with Away mode — a smart setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers. Advanced Tuning for Serious Tweakers An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, & various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want. Multiple Temperature Sources Each header can dynamically reference three thermal sensors. Fan Xpert 2+ means that you can map the temperature of supported ASUS graphics cards to optimize cooling for GPU- & CPU-intensive tasks.