ASUS Prime B660M-A DDR4 Intel Motherboard

The ASUS Prime B660M-A DDR4 is a microATX motherboard designed around the Intel B660 chipset, built to accommodate 12th Generation Intel Core, Pentium Gold, and Celeron processors via the LGA1700 socket. Measuring 24.4 cm × 24.4 cm, it fits into compact and mid-tower cases with ease, making it a practical choice for productivity workstations and space-conscious desktop builds alike. Memory capacity is a standout attribute: four DIMM slots support up to 128 GB of non-ECC, unbuffered DDR4 at native speeds of 2133–3200 MHz, with overclocked profiles reaching up to 5333 MHz (OC). ASUS OptiMem II trace routing and ground-layer optimisation preserve signal integrity at these higher frequencies. Storage connectivity covers two M.2 Key-M slots (both supporting PCIe 4.0 ×4 and 2242/2260/2280 form factors) and four SATA 6 Gb/s ports, with Intel Rapid Storage Technology enabling RAID 0/1/5/10 across the SATA array. Expansion is handled by one CPU-connected PCIe 4.0/3.0 ×16 slot and two additional B660 chipset slots (one ×4 and one ×1 in ×16 physical), giving ample room for a dedicated GPU, capture card, or NVMe adapter. Display outputs on the rear I/O include one DisplayPort 1.4 (4K@60 Hz) and two HDMI 2.1 ports (4K@60 Hz each) for use with processors featuring integrated graphics. Connectivity spans 16 total USB ports: two rear USB 3.2 Gen 2 Type-A, four rear USB 2.0 Type-A, with front-panel headers delivering four USB 3.2 Gen 1 ports, one USB 3.2 Gen 1 Type-C, and five additional USB 2.0 ports. An Intel 1 Gb Ethernet port with ASUS LANGuard surge protection rounds out the wired networking. Audio is handled by a Realtek ALC897 codec delivering 7.1 surround sound with 24-bit/192 kHz playback, audio shielding, premium capacitors, and dedicated PCB layers. Cooling headers include one 4-pin CPU fan, one 4-pin CPU OPT fan, and two 4-pin chassis fan headers, all configurable through Fan Xpert 2+ software or directly in the UEFI BIOS. Onboard heatsinks cover the VRM and both M.2 slots. RGB enthusiasts will find three AURA Addressable Gen 2 headers and one AURA RGB header, all managed through Armoury Crate. ASUS 5X Protection III safeguards include DIGI+ VRM, ESD Guards, enhanced DRAM overcurrent protection, SafeSlot Core+, and overvoltage protection. The board ships with a 3-year warranty. Verified Specifications: • Socket: Intel LGA1700 • Chipset: Intel B660 • Form Factor: microATX, 24.4 cm × 24.4 cm • Memory: 4 × DIMM, DDR4, up to 128 GB, non-ECC unbuffered; 2133–3200 MHz native; up to 5333 MHz (OC) • Storage: 2 × M.2 PCIe 4.0 ×4 (Key M, 2242/2260/2280); 4 × SATA 6 Gb/s; RAID 0/1/5/10 (SATA) • Expansion: 1 × PCIe 4.0/3.0 ×16 (CPU); 1 × PCIe 3.0 ×16 (×4 mode); 1 × PCIe 3.0 ×16 (×1 mode) • Display: 1 × DisplayPort 1.4 (4K@60 Hz); 2 × HDMI 2.1 (4K@60 Hz) • USB Rear: 2 × USB 3.2 Gen 2 Type-A; 4 × USB 2.0 Type-A • USB Front Headers: 4 × USB 3.2 Gen 1; 1 × USB 3.2 Gen 1 Type-C; 5 × USB 2.0 • Ethernet: Intel 1 GbE with ASUS LANGuard • Audio: Realtek ALC897, 7.1 surround, 24-bit/192 kHz • BIOS: 128 Mb Flash ROM, UEFI AMI BIOS • OS Support: Windows 11 64-bit, Windows 10 64-bit • Warranty: 3 Years