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 and intelligent tuning options Prime B660 provides users and PC DIY builders a range of performance tuning options via intuitive software and firmware features.N/AN/AASUS PRIME B660M-A D4 offers a sleek futuristic-looking build with a black and white finish space-shuttle-inspired design elements metallic nameplate and PCB cover.N/AN/AFLEXIBILITYN/AComprehensive 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.N/AN/AIntelligent ControlN/AAll-Around Energy EfficiencyN/AThe Energy Processing Unit (EPU) automatically optimizes power consumption and maximizes energy savings with Away mode a smart setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers.N/AN/AFlexible Air- and Liquid-Cooling ControlsN/AASUS Fan Xpert 2+ software provides comprehensive control over fans water pumps and all-in-one (AiO) coolers. Whether cooling with air or water an Auto-Tuning mode intelligently configures all parameters with a single click. Theres also an Extreme Quiet mode that reduces all fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans water pumps and AiO coolers can also be controlled via the UEFI BIOS.N/AN/APrecise Digital Power ControlN/AThe Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.N/AN/AUEFI BIOSN/AThe renowned ASUS UEFI BIOS provides everything you need to configure tweak and tune your system. It offers intelligently simplified options for PC DIY beginners as well as comprehensive features for seasoned veterans.N/AN/AAdvanced Tuning for Serious TweakersN/AAn intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options and various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.N/AN/AQuick and Simple SetupN/AEZ mode displays vital settings and stats and also offers guided wizards drag-and-drop functionality and one-click application of important settings all to help you get your rig up and running in no time.N/AN/AEZ XMPN/AImprove DRAM performance with one click.N/AN/AIntuitive Graphical Fan ControlN/AFine-tune individual fan settings simply by dragging a curve with the mouse.N/AN/AAura On/Off Mode (Stealth)N/AEasily enable or disable Aura RGB lighting or every onboard LED for a subdued aesthetic touch.N/AN/ACOOLINGN/APrime B660 series are engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.N/AN/AM.2 HeatsinkN/AM.2 heatsink wards off throttling that can occur with M.2 storage during sustained transfers. The heatsink is held in place by captive screws.N/AN/AVRM Heatsink and Thermal PadN/AVRM heatsink and thermal pad improve heat transfer from the MOSFETs and chokes for better cooling performance.N/AN/ACooler by DesignN/APrime B660 series feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.N/AN/AMultiple Temperature SourcesN/AEach header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.N/AN/ASmart ProtectionN/AA dedicated integrated circuit protects each fan header from overheating and overcurrent.N/AN/A4-Pin PWM/DC FanN/AEach onboard header supports auto-detection of PWM or DC fans.N/AN/APERFORMANCEN/APrime B660 series are built to handle the additional cores and increased bandwidth of 12th Generation Intel processors. ASUS B660 motherboards provide all the fundamentals to boost daily productivity so your system will be ready for action with stable power intuitive cooling and flexible transfer options.N/AN/ARobust Power DesignN/AStable power is essential to extract every last bit of performance out of 12th Generation Intel processors. PRIME B660M-A D4 is geared to cater to the demands of these high-core-count CPUs.N/AN/AProCool ConnectorN/AProprietary connector augments the motherboard's link to the PSU with 8 pin connector that passes 12 volts of power directly to the processors. Each jack features solid pins that can handle more current than hollow-pin connectors.N/AN/AMemoryN/AN/ADDR4 5333(OC)N/AImprovements to trace routing design provide the latest Intel processors with enhanced access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce path distance and it adds shielding zones that significantly reduce crosstalk.N/AN/AASUS OptiMem IIN/ARevisions to the motherboards trace routing provide the latest Intel processors with unrestricted access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce vias and adds shielding zones that significantly reduce crosstalk.N/AN/ABenefits of ASUS OptiMem II:N/AImproved memory stability and compatibilityN/AAllows lower memory latencies at equivalent voltagesN/AImproved memory frequency marginN/AMotherboards with OptiMem II technology were tested with Synopsys HSPICE simulation softwareN/ATop layer ground ring to prevent lateral interferenceN/AN/AStorageN/AN/ATwo M.2 slots (up to 64 Gbps)N/APrime B660M-A D4 offers a total of two M.2 slots that support data-transfer speeds of up to 64 Gbps via PCIe 4.0 enabling quicker boot-up and app load times with OS or application drives.N/A* Actual transmission speeds will be lower than the theoretical maximum speed.N/AN/AConnectivityN/AN/APCIe 4.0 SlotN/APrime B660 motherboards are designed specifically for 12th Generation Intel Core CPUs and offer PCIe 4.0 connectivity for the latest GPUs. The wide bandwidth and superfast transmission speeds allow you to create feature-rich builds that can handle high loads effortlessly.N/AN/AUSB 3.2 Gen 1 Type-CN/ANumerous USB ports support high-end rigs loaded with peripherals including front USB Type-C connectors with fast USB 3.2 Gen 1 for transmission speeds of up to 5 Gbps.N/AN/APersonalizationN/AN/AAura SyncN/AOutshine the CompetitionN/AA well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips and devices connected to the onboard RGB headers and it can all be synced with an ever-growing portfolio of Aura-capable hardware.N/AN/AAddressable Gen 2 HeadersN/AThree addressable Gen 2 headers are capable of detecting the number of LEDs on second-gen addressable RGB devices allowing the software to automatically tailor lighting effects to specific devices. The new headers also offer backward-compatibility with existing Aura RGB gear.N/AN/AArmoury CrateN/AArmoury Crate is a new software utility designed to give you centralized control of supported products. From a single intuitive interface Armoury Crate allows you to easily customize RGB lighting and effects for every compatible device in your arsenal. The software also provides control of settings for an ever-growing number of ASUS products including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and news to help you stay in touch with the ASUS community.N/AN/AQ-LED CoreN/AThe Q-LED Core display produces light patterns by power LED during the Power-On Self-Test (POST) that can help users troubleshoot potential issues.N/AN/ASafeSlot Core+N/ASafeSlot Core+ is the ASUS-exclusive PCIe slot fortified with a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.N/AN/ALANGuardN/AN/APumped-up throughput 2.5X higher surge toleranceN/AASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.N/AN/AOvervoltage ProtectionN/AN/AWorld-class circuit-protecting power designN/AAn exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.N/AN/ADRAM Overcurrent ProtectionN/AN/AShort-circuit damage preventionN/AOnboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.N/AN/AStainless-Steel Back I/ON/AN/A3X corrosion-resistance for greater durabilityN/ACorrosion-resistant stainless-steel back I/