ASUS Prime B660M-K DDR4 Intel Motherboard

The ASUS Prime B660M-K DDR4 is a microATX motherboard built around the Intel B660 chipset, designed to pair with 12th Generation Intel Core, Pentium Gold, and Celeron processors via the LGA1700 socket. At 24.4 cm x 21.1 cm, it fits compact mid-tower and small-form-factor cases while delivering a well-rounded feature set for productivity builds, home office rigs, and entry-level workstations. Memory support comes via two DIMM slots accommodating up to 64 GB of DDR4 in dual-channel configuration. Speeds range from DDR4-2133 at native frequencies up to DDR4-5333 in overclocked (OC) mode, with Intel XMP profile support for straightforward tuning. The primary PCIe x16 slot operates at PCIe 4.0 with a 12th Gen processor installed, or falls back to PCIe 3.0 when bandwidth requirements differ; two additional PCIe 3.0 x1 slots handle expansion cards. Storage is covered by two M.2 Key-M slots — both supporting PCIe 4.0 x4 and form factors 2242, 2260, and 2280 — alongside four SATA 6 Gb/s ports, bringing total drive capacity to six devices. Intel Rapid Storage Technology enables SATA RAID 0/1/5/10. Display output for integrated graphics consists of one HDMI 2.1 port (4K@60 Hz) and one D-Sub (VGA) port. Rear-panel connectivity includes four USB 3.2 Gen 1 Type-A ports, two USB 2.0 Type-A ports, a Realtek Gigabit Ethernet jack with ASUS LANGuard surge protection, three audio jacks, and a legacy PS/2 keyboard/mouse combo port. Additional front-panel headers expand USB further: one USB 3.2 Gen 1 header (two ports) and two USB 2.0 headers (four ports). Audio is handled by a Realtek 7.1 surround-sound HD codec supporting up to 24-bit/192 kHz playback, with audio shielding, premium capacitors, and dedicated PCB layers to minimise noise. ASUS 5X Protection III features — including DIGI+ VRM digital power control, overvoltage protection, SafeSlot Core reinforced PCIe slot, and stainless-steel back I/O — protect connected components. A VRM heatsink aids sustained stability under multi-core loads. The UEFI AMI BIOS (128 Mb Flash ROM) provides both an EZ Mode for beginners and a full Advanced Mode for experienced builders, with CrashFree BIOS 3 and EZ Flash 3 recovery utilities. An onboard RGB header and Armoury Crate software enable lighting customisation. Verifiable Specifications: - Socket: Intel LGA1700 (12th Gen Intel Core / Pentium Gold / Celeron) - Form Factor: microATX, 24.4 cm x 21.1 cm - Memory: 2x DIMM, max 64 GB DDR4 (up to DDR4-5333 OC), dual-channel, XMP support - Expansion: 1x PCIe 4.0/3.0 x16, 2x PCIe 3.0 x1 - Storage: 2x M.2 (PCIe 4.0 x4, Key-M, 2242/2260/2280) + 4x SATA 6 Gb/s - Display: 1x HDMI 2.1 (4K@60 Hz), 1x D-Sub - USB (rear): 4x USB 3.2 Gen 1 Type-A, 2x USB 2.0 Type-A - Ethernet: Realtek 1 Gb LAN with ASUS LANGuard - Audio: Realtek 7.1 HD, 24-bit/192 kHz - BIOS: 128 Mb Flash ROM, UEFI AMI - OS Support: Windows 11 64-bit, Windows 10 64-bit - Warranty: 3 Years