MSI MAG B660M Mortar Wifi DDR5 Intel Motherboard

The MSI MAG B660M Mortar WiFi DDR5 is a Micro-ATX motherboard built around the Intel B660 chipset and the LGA1700 socket, designed to pair with 12th Generation Intel Core, Pentium Gold, and Celeron processors. Its compact 9.6 x 9.6 inch (24.4 x 24.4 cm) footprint makes it well-suited for space-efficient builds without compromising on connectivity or thermal management. Memory support centres on four DDR5 slots accommodating up to 128 GB of non-ECC unbuffered RAM. At stock JEDEC settings the board runs at 4800 MHz (1R), while Intel XMP 3.0 profiles push single-rank, single-DIMM-per-channel configurations beyond 6200 MHz. Dual-channel operation is supported across both channels. Storage is handled by two M.2 slots (Key-M), both capable of PCIe 4.0 x4 speeds, delivering up to 64 Gb/s of theoretical throughput per slot. The second slot additionally supports SATA 6 Gb/s M.2 drives. Six SATA 6 Gb/s ports round out the storage options, with RAID 0, 1, 5, and 10 available for SATA arrays. Intel Optane Memory is also supported. Networking is a highlight of this model. A Realtek 8125BG controller provides 2.5 Gb/s wired LAN, while an Intel Wi-Fi 6E module — pre-installed in the Key-E M.2 slot — covers 2.4 GHz, 5 GHz, and 6 GHz bands with 160 MHz channel support, MU-MIMO TX/RX, and throughput up to 2.4 Gbps. Bluetooth 5.2 is included. The rear I/O panel features one USB 3.2 Gen 2x2 (20 Gbps) Type-C port, three USB 3.2 Gen 2 (10 Gbps) Type-A ports, four USB 2.0 ports, HDMI 2.1 (4K 60Hz), DisplayPort 1.4 (HBR3, 4K 60Hz), optical S/PDIF output, and a 2.5G LAN jack. Internal headers add a USB 3.2 Gen 2 (10 Gbps) Type-C front-panel connector and a USB 3.2 Gen 1 (5 Gbps) header. Audio is delivered by a Realtek ALC1200 codec in a 7.1-channel High Definition Audio configuration. The audio circuit is electrically isolated on the PCB, with dedicated left/right channel separation and S/PDIF output. Thermal management uses an extended heatsink over the 12+1+1 Duet Rail VRM, while the M.2 Shield Frozr heatsink covers both M.2 slots to help maintain SSD peak speeds. Fan control extends across one CPU fan header, one water-pump header (up to 3 A), and two system fan headers. EZ Debug LEDs and one 4-pin RGB plus two 3-pin ARGB headers support system diagnostics and lighting. 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 - CPU Support: 12th Gen Intel Core / Pentium Gold / Celeron - Memory: 4x DDR5, up to 128 GB, XMP 3.0, up to 6200+ MHz (OC, 1DPC 1R) - PCIe: 1x PCIe 4.0 x16 (CPU), 1x PCIe 3.0 x4 (chipset), 1x PCIe 3.0 x1 - M.2: 2x Key-M PCIe 4.0 x4 (M2_2 also supports SATA) - SATA: 6x 6 Gb/s; RAID 0/1/5/10 - LAN: Realtek 8125BG 2.5 Gbps - Wi-Fi: Intel Wi-Fi 6E (802.11ax), BT 5.2 - Audio: Realtek ALC1200, 7.1-channel HD Audio, S/PDIF out - Rear USB: 1x USB 3.2 Gen 2x2 20G Type-C, 3x USB 3.2 Gen 2 10G Type-A, 4x USB 2.0 - Video Out: HDMI 2.1 (4K 60Hz), DisplayPort 1.4 (4K 60Hz) - Multi-GPU: AMD CrossFire - Warranty: 3 years