MSI B660M Mortar Max Wifi DDR4 Intel Motherboard

The MSI MAG B660M Mortar Max WiFi DDR4 is a Micro-ATX motherboard built on the Intel B660 chipset for the LGA1700 socket, supporting 12th and 13th Gen Intel Core, Pentium Gold, and Celeron processors. Measuring 24.4 cm × 24.4 cm, it fits standard Micro-ATX cases and pairs a compact footprint with a feature set typically found on larger boards. Four DDR4 DIMM slots accommodate up to 128 GB of memory. Native JEDEC speeds run at 2133, 2666, or 3200 MHz, while XMP profiles allow overclocking: up to 4800+ MHz in a single-rank single-DIMM-per-channel configuration, and up to 3600+ MHz with two ranks across two channels. Dual-channel operation is supported, and non-ECC unbuffered modules are required. Storage options are generous. Two PCIe 4.0 x4 M.2 slots (both Key-M, supporting 2242/2260/2280 devices) are covered by MSI's M.2 Shield Frozr heatsinks to help maintain SSD temperatures under sustained loads. Six SATA 6 Gb/s ports are available — four from the B660 chipset and two from an ASMedia ASM1061 controller — and the board supports Intel Optane Memory as well as RAID 0, 1, 5, and 10 across SATA devices. The primary PCIe x16 slot (PCI_E1, CPU-sourced) runs at PCIe 5.0 x16 with Steel Armor reinforcement. A second PCIe x16 physical slot (PCI_E3, chipset-sourced) operates electrically at PCIe 3.0 x4, and one PCIe 3.0 x1 slot rounds out expansion. AMD CrossFire multi-GPU configurations are supported. Networking is handled by a Realtek RTL8125BG 2.5 Gbps wired LAN controller and an Intel Wi-Fi 6E module pre-installed in a Key-E M.2 slot. The wireless module covers 2.4 GHz, 5 GHz, and 6 GHz bands (160 MHz channels) with MU-MIMO TX/RX and 802.11ax support, delivering theoretical speeds up to 2.4 Gbps. Bluetooth 5.2 is included. The rear I/O panel provides one USB 3.2 Gen 2×2 (20 Gbps) Type-C, three USB 3.2 Gen 2 (10 Gbps) Type-A, four USB 2.0 Type-A ports, HDMI 2.1 (4K/60Hz, HDR), DisplayPort 1.4 (HBR3, 4K/60Hz), and a 2.5 Gbps RJ-45. Internal headers include a USB 3.2 Gen 2 10 Gbps Type-C connector, one USB 3.2 Gen 1 header (two ports), and two USB 2.0 headers (four ports). A dedicated 4-pin water-pump header supports up to 3 A, complementing two system fan headers and one CPU fan header. Fan and pump curves are manageable through MSI's BIOS Total Fan Control and Frozr AI Cooling, which adjusts speeds based on CPU and GPU temperature readings. Audio is handled by a Realtek ALC897 codec delivering 7.1-channel HD Audio with S/PDIF output. RGB enthusiasts will find one 4-pin RGB and two 3-pin ARGB headers, plus four EZ Debug LEDs for straightforward POST-state diagnosis. The board ships with a 3-year manufacturer warranty. Verified Specifications: • Socket: LGA1700 | Chipset: Intel B660 • Form Factor: Micro-ATX, 24.4 cm × 24.4 cm • CPU Support: 12th & 13th Gen Intel Core / Pentium Gold / Celeron • Memory: 4× DDR4 DIMM, max 128 GB, up to 4800+ MHz (OC), Dual-Channel, XMP • PCIe: 1× PCIe 5.0 x16 (CPU), 1× PCIe 3.0 x4 (chipset, x16 slot), 1× PCIe 3.0 x1 • Storage: 2× M.2 PCIe 4.0 x4 (Key-M), 4× SATA 6 Gb/s (B660), 2× SATA 6 Gb/s (ASM1061) • RAID: 0, 1, 5, 10 (SATA) • LAN: Realtek RTL8125BG 2.5 Gbps • Wi-Fi: Intel Wi-Fi 6E (802.11ax, 6 GHz, up to 2.4 Gbps), BT 5.2 • USB Rear: 1× USB 3.2 Gen 2×2 Type-C (20 Gbps), 3× USB 3.2 Gen 2 Type-A, 4× USB 2.0 • Display: 1× HDMI 2.1 (4K/60Hz), 1× DisplayPort 1.4 (4K/60Hz) • Audio: Realtek ALC897, 7.1-CH HD, S/PDIF out • Warranty: 3 Years