ASUS PRIME B660M-A D4-CSMASUS Prime series motherboards are expertly engineered to unleash the full potential of 14th, 13th & 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.ASUS PRIME B660M-A D4-CSM offers a sleek, futuristic-looking build with a black and white finish, space-shuttle-inspired design elements, metallic nameplate and PCB cover.CPUIntel Socket LGA1700 for Intel Core™ 14th & 13th Gen Processors, Intel Core™ 12th Gen, Pentium Gold and Celeron ProcessorsSupports Intel Turbo Boost Technology 2.0 and Intel Turbo Boost Max Technology 3.0*** Refer to www.asus.com for CPU support list.** Intel Turbo Boost Max Technology 3.0 support depends on the CPU types.ChipsetIntel B660 ChipsetMemory4 x DIMM, Max. 128GB, DDR45333(OC) 5000(OC) 4800(OC) 4600(OC) 4400(OC) 4266(OC) 4000(OC) 3733(OC) 3600(OC) 3466(OC) 3400(OC) 3333(OC) 3200 3000 2933 2800 2666 2400 2133 Non-ECC, Un-buffered Memory* "Dual Channel Memory ArchitectureSupports Intel Extreme Memory Profile (XMP)OptiMem II*Actual memory data rate depends on the CPU types and DRAM modules, for more information refer to www.asus.com for memory support list.Graphics1 x DisplayPort **2 x HDMI ports**** Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.** Supports max. 4K@60Hz as specified in DisplayPort 1.4.***Supports 4K@60Hz as specified in HDMI 2.1.Expansion SlotsIntel Core™ Processors (14th & 13th & 12th Gen)*1 x PCIe 4.0 3.0 x16 slotIntel B660 Chipset *1 x PCIe 3.0 x16 slot (supports x4 mode)1 x PCIe 3.0 x16 slot (supports x1 mode)*Supports Intel Optane Memory H Series on PCH-attached PCIe slotStorageTotal supports 2 x M.2 slots and 4x SATA 6Gb s ports*Intel Core™ Processors (14th & 13th & 12th Gen)*M.2_1 slot (Key M), type 2242 2260 2280Intel B660 Chipset**M.2_2 slot (Key M), type 2242 2260 2280 (supports PCIe 4.0 x4 mode)*4 x SATA 6Gb s ports* Intel Rapid Storage Technology supports SATA RAID 0 1 5 10.** Intel Rapid Storage Technology supports Intel Optane Memory H Series on PCH attached M.2 slots.Ethernet1 x Intel 1Gb EthernetUSBRear USB (Total 6 ports)2 x USB 3.2 Gen 2 ports (2 x Type-A )4 x USB 2.0 ports (4 x Type-A)Front USB (Total 10 ports)2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports1 x USB 3.2 Gen 1 connector (supports USB Type-C)2 x USB 2.0 headers support additional 4 USB 2.0 ports1 x USB 2.0 header supports 1 USB 2.0 portAudioRealtek 7.1 Surround Sound High Definition Audio CODEC*- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking- Supports up to 24-Bit 192 kHz playback "Audio Features- Audio Shielding- Premium audio capacitors- Dedicated audio PCB layers** A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.Back Panel I O Ports2 x USB 3.2 Gen 2 ports (2 x Type-A )4 x USB 2.0 ports (4 x Type-A)1 x DisplayPort2 x HDMI ports1 x Intel 1Gb Ethernet port3 x Audio jacks1 x PS 2 Keyboard Mouse combo portInternal I O ConnectorsFan and Cooling related1 x 4-pin CPU Fan header1 x 4-pin CPU OPT Fan header2 x 4-pin Chassis Fan headersPower related1 x 24-pin Main Power connector1 x 8-pin +12V Power connectorStorage related2 x M.2 slots (Key M)4 x SATA 6Gb s portsUSB2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports1 x USB 3.2 Gen 1 connector (supports USB Type-C)2 x USB 2.0 headers support additional 4 USB 2.0 ports1 x USB 2.0 header supports 1 USB 2.0 portMiscellaneous3 x AURA Addressable Gen 2 headers1 x AURA RGB header1 x Clear CMOS header1 x COM Port header1 x Front Panel Audio header (AAFP)1 x LPT header1 x S PDIF Out header1 x SPI TPM header (14-1pin)1 x 20-3 pin System Panel header with Chassis intrude functionSpecial FeaturesASUS 5X PROTECTION III- DIGI+ VRM- Enhanced DRAM Overcurrent Protection- ESD Guards- LANGuard- Overvoltage Protection- SafeSlot Core+- Stainless-Steel Back I OASUS Q-Design- Q-DIMM- Q-SlotASUS Thermal Solution- M.2 heatsink- VRM heatsink designASUS EZ DIY- ProCoolAURA Sync- AURA RGB header- Addressable Gen 2 RGB headersSoftware FeaturesASUS Exclusive SoftwareArmoury Crate- AURA Creator- AURA Sync- Fan Xpert 2+AI Suite 3- Performance And Power Saving UtilityTurboV EVOEPUDigi+ VRMASUS CPU-ZNorton Anti-virus software (Free Trial version)WinRARUEFI BIOSASUS EZ DIY- ASUS CrashFree BIOS 3- ASUS EZ Flash 3- ASUS UEFI BIOS EZ ModeBIOS128 Mb Flash ROM, UEFI AMI BIOSManageabilityWOL by PME, PXEAccessoriesCables2 x SATA 6Gb s cablesMiscellaneous1 x I O Shield1 x M.2 Rubber Package1 x M.2 SSD screw packageInstallation Media1 x Support DVDDocumentation1 x User manualOperating SystemWindows 11 64-bit, Windows 10 64-bitForm FactormATX Form Factor9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )