MSI Pro B660M-G DDR4 Intel Motherboard

The MSI Pro B660M-G DDR4 is a Micro-ATX motherboard built on the Intel B660 chipset with the LGA1700 socket, designed to support 12th Generation Intel Core, Pentium Gold, and Celeron processors. Its compact 9.6 in. x 8.7 in. (24.4 cm x 22.0 cm) form factor makes it a practical choice for space-conscious desktop builds without sacrificing connectivity or feature depth. The board accommodates two DDR4 memory slots supporting up to 64 GB of non-ECC, unbuffered memory in dual-channel configuration. Memory speeds range from standard 2133 MHz up to 4600+ MHz (OC) with a single-rank, single-DIMM-per-channel setup, and up to 4000+ MHz with dual-rank DIMMs. Intel XMP profiles are supported for straightforward memory tuning through BIOS or MSI’s software. Storage options are generous for the platform. Two M.2 Key-M slots both support PCIe 4.0 x4, covering 2242, 2260, and 2280 form factors. The primary M2_1 slot is CPU-connected for lowest latency, while M2_2 draws from the B660 chipset and also supports SATA 6 Gb/s and Intel Optane Technology. Four additional SATA 6 Gb/s ports round out the storage setup, though one port is shared with M2_2 when an M.2 SATA drive is installed. Both M.2 slots are covered by MSI’s M.2 Shield Frozr heatsink to manage thermal throttling under sustained SSD workloads. The single PCIe 4.0 x16 expansion slot (CPU-connected) handles discrete graphics, reinforced with MSI Steel Armor to protect against GPU sag. A secondary PCIe 3.0 x1 slot comes from the B660 chipset for add-in cards. Networking is handled by a Realtek RTL8125BG controller delivering 2.5 Gbps wired LAN. Onboard audio uses the Realtek ALC897 codec with 7.1-channel High Definition Audio output. For display, the rear panel provides VGA (up to 2048×1536 @ 50 Hz), HDMI 2.1 with HDR (up to 4K @ 60 Hz), and DisplayPort 1.4 (up to 4K @ 60 Hz) when using a processor with integrated graphics. USB connectivity includes six USB 3.2 Gen 1 5 Gbps ports (four rear Type-A, two via internal header) and six USB 2.0 ports total (two rear Type-A, four via internal headers). Internal headers also provide RGB lighting control via one JRGB and two JRAINBOW connectors. Four EZ Debug LEDs assist with POST troubleshooting. Fan control covers one 4-pin CPU fan header and two 4-pin system fan headers, all manageable through UEFI BIOS or MSI software using the FROZR AI Cooling engine. The UEFI AMI BIOS supports ACPI 6.4, SMBIOS 3.4, and multi-language operation from a 256 Mb flash chip. Verifiable Specifications: • Socket: LGA1700 | Chipset: Intel B660 • CPU Support: 12th Gen Intel Core, Pentium Gold, Celeron • Memory: 2x DDR4 slots, max 64 GB, up to 4600+ MHz (OC, 1DPC 1R) • Expansion: 1x PCIe 4.0 x16 (CPU), 1x PCIe 3.0 x1 (chipset) • M.2: 2x PCIe 4.0 x4 (2242/2260/2280); M2_2 also supports SATA • SATA: 4x 6 Gb/s ports • Display: VGA, HDMI 2.1 (4K@60Hz), DisplayPort 1.4 (4K@60Hz) • Audio: Realtek ALC897, 7.1-channel HD Audio • LAN: Realtek RTL8125BG, 2.5 Gbps • USB (rear): 4x USB 3.2 Gen 1 + 2x USB 2.0 Type-A • Form Factor: M-ATX, 9.6 in. x 8.7 in. (24.4 cm x 22.0 cm) • BIOS: UEFI AMI, ACPI 6.4, SMBIOS 3.4 • Warranty: 3 Years