MSI Pro B660-A DDR4 Intel Motherboard

The MSI Pro B660-A DDR4 is an ATX form-factor motherboard built around the Intel B660 chipset and the LGA1700 socket, designed to support 12th Gen Intel Core, Pentium Gold, and Celeron processors. Aimed at professionals and productive desktop builders, it delivers a stable, feature-rich platform without unnecessary frills. Memory flexibility is a highlight: four DDR4 slots accommodate up to 128 GB of non-ECC, unbuffered RAM in dual-channel configuration. JEDEC-standard speeds of 2133, 2666, and 3200 MHz are supported out of the box, while Intel XMP profiles allow single-rank, single-DIMM configurations to reach 4800+ MHz. The board's extended PWM heatsink uses a 7 W/mK thermal pad to keep even multi-core processors running at sustained speeds. Storage options are equally capable. Two Key-M M.2 slots both support PCIe 4.0 x4 — the CPU-connected M2_1 handles drives up to 22110 mm in length, while the chipset-connected M2_2 also accommodates SATA 6 Gb/s devices. Both slots are covered by MSI's M.2 Shield Frozr heatsink to reduce thermal throttling. Four additional SATA 6 Gb/s ports round out the storage connectivity, with support for RAID 0, 1, 5, and 10. Expansion is handled by two PCIe x16 slots — the primary from the CPU at PCIe 4.0 x16 bandwidth, and a secondary from the chipset at PCIe 3.0 x4 — plus three PCIe x1 slots. An E-key M.2 slot (M2_3) is reserved for a PCIe Wi-Fi module. Networking is handled by an Intel I225-V-class 8125BG controller delivering 2.5 Gbps wired LAN, paired with MSI's LAN Manager software for application-level traffic prioritisation. Audio comes via a Realtek ALC897 codec with 7.1-channel HD Audio output and an optical S/PDIF port on the rear panel. Display outputs for iGPU-equipped processors include VGA (up to 2048×1536 @ 60 Hz), HDMI 2.1 with HDR (up to 4K 60 Hz), and DisplayPort 1.4 (up to 4K 60 Hz). The rear panel also provides USB 3.2 Gen 2 10 Gbps Type-A and Type-C ports alongside USB 2.0 ports. Internal headers add USB 3.2 Gen 1 5 Gbps Type-C, a Gen 1 connector, and USB 2.0. Cooling management is comprehensive: seven fan headers total — one CPU, one water-pump, and five system — all 4-pin PWM, fully controllable via BIOS or MSI's software suite using the FROZR AI Cooling algorithm, which adjusts fan curves based on CPU and GPU temperatures. RGB personalisation is supported through one 4-pin RGB header and two 3-pin ARGB headers, while four EZ Debug LEDs aid troubleshooting. The board carries a 3-year manufacturer warranty. Verified Specifications: - Form Factor: ATX, 30.5 cm × 24.4 cm - Socket: LGA1700 | Chipset: Intel B660 - CPU Support: 12th Gen Intel Core, Pentium Gold, Celeron - Memory: 4× DDR4 slots, up to 128 GB, dual-channel, XMP supported - Primary PCIe: x16 slot at PCIe 4.0 (from CPU) - M.2 Slots: 2× Key-M PCIe 4.0 x4 (M2_2 also SATA); 1× E-key for Wi-Fi - SATA: 4× SATA 6 Gb/s | RAID: 0/1/5/10 - LAN: Intel 8125BG 2.5 Gbps - Audio: Realtek ALC897, 7.1-channel HD Audio - Display Out: VGA, HDMI 2.1 (4K/60), DisplayPort 1.4 (4K/60) - USB Rear: 2× USB 3.2 Gen 2 (Type-A + Type-C), 2× USB 2.0 - Fan Headers: 7 total (1 CPU, 1 pump, 5 system) - I/O Controller: NUVOTON NCT6687-R - Warranty: 3 Years