MSI Pro B660M-A DDR5 Intel Motherboard

The MSI Pro B660M-A is a Micro-ATX form factor motherboard built on the Intel B660 chipset, designed for 12th Generation Intel Core, Pentium Gold, and Celeron processors using the LGA1700 socket. It is a DDR4 platform, offering four memory slots capable of supporting up to 128 GB of non-ECC, un-buffered RAM. Standard JEDEC speeds include 2133, 2666, and 3200 MHz, while overclocking can push a single-rank, single-slot configuration beyond 4800 MHz with XMP profile support. Storage options are well-equipped for a mainstream board: two M.2 Key-M slots both support PCIe 4.0 x4, with the M2_1 slot fed directly from the CPU and the M2_2 slot sourced from the chipset — the latter also supports SATA-based M.2 drives. Four SATA 6 Gb/s ports round out storage connectivity, with RAID 0, 1, 5, and 10 configurations supported across SATA devices. Note that SATA port 8 is disabled when a SATA M.2 drive occupies the M2_2 slot. For graphics, the primary PCIe x16 slot (PCI_E1) runs at PCIe 4.0 x16 from the CPU, making it suitable for current-generation discrete GPUs. A secondary x16-length slot operates at PCIe 3.0 x4 via the chipset, alongside a PCIe 3.0 x1 slot. Display outputs for integrated graphics include HDMI and DisplayPort on the rear panel, available only with processors that feature an integrated GPU. Networking is handled by a Realtek RTL8125BG controller delivering 2.5 Gbps wired LAN — a meaningful upgrade over standard gigabit. Audio uses the Realtek ALC897 codec for 7.1-channel high-definition output. The rear I/O includes USB 3.2 Gen 2 (10 Gbps) Type-A, USB 3.2 Gen 1 (5 Gbps) Type-A, and USB 2.0 ports, complemented by internal headers for additional USB connectivity including a front-panel USB Type-C header. RGB and system lighting are supported via one 4-pin RGB connector and two 3-pin RAINBOW (ARGB) connectors, plus four EZ Debug LEDs for straightforward troubleshooting. Fan headers include a CPU fan, water-pump fan, and two system fan connectors — all 4-pin. Key Verified Specifications: - Form Factor: Micro-ATX, 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm) - Socket: LGA1700 | Chipset: Intel B660 - Memory: 4x DDR4 slots, up to 128 GB, XMP supported; OC up to 4800+ MHz (1DPC 1R) - Primary GPU Slot: PCIe 4.0 x16 (CPU) - M.2: 2x Key-M slots, both up to PCIe 4.0 x4 - Storage: 4x SATA 6 Gb/s; RAID 0/1/5/10 - LAN: Realtek RTL8125BG 2.5 Gbps - Audio: Realtek ALC897, 7.1-channel HD - USB (rear): 2x USB 3.2 Gen 2 Type-A, 2x USB 3.2 Gen 1 Type-A, 2x USB 2.0 - Warranty: 3 Years (as stated by source)