MSI MAG B660M Mortar DDR4 Motherboard

Supports 12th Gen Intel® Core™, Pentium® Gold and Celeron® processors 1

Processor socket LGA1700

4x DDR4 memory slots, support up to 128GB1

Supports 1R 2133/ 2666/ 3200 MHz (by JEDEC & POR)

Max overclocking frequency:

1DPC 1R Max speed up to 4800+ MHz

1DPC 2R Max speed up to 4000+ MHz

2DPC 1R Max speed up to 4000+ MHz

2DPC 2R Max speed up to 3600+ MHz

Supports Dual-Channel mode

Supports non-ECC, un-buffered memory

Supports Intel® Extreme Memory Profile (XMP)

2x PCIe x16 slots

PCI_E1 slot (From CPU)

Supports PCIe 4.0 x16

PCI_E3 slot (From B660 Chipset)

Supports PCIe 3.0 x4

1x PCIe 3.0 x1 slot

1x HDMI 2.1 with HDR port, supports a maximum resolution of 4K 60Hz1 / 2

1x DisplayPort 1.4 port with HBR3, supports a maximum resolution of 4K 60Hz1 /

2 Available only on processors featuring integrated graphics.

Graphics specifications may vary depending on the CPU installed.

• 4x SATA 6Gb/s ports (SATA5~8, from B660 Chipset)1
• 2x SATA 6Gb/s ports (SATA_A & SATA_B, from ASMedia ASM1061)
• 2x M.2 slots (Key M)
• M2_1 slot (From CPU)
• Supports PCIe 4.0
• x4 Supports 2242/ 2260/ 2280 storage devices
• M2_2 slot (From B660 Chipset)1
• Supports PCIe 4.0 x4
• Supports SATA 6Gb/s
• Supports 2242/ 2260/ 2280 storage devices
• Supports Intel® Optane™ Memory
• SATA8 will be unavailable when installing M.2 SATA SSD in the M2_2 slot.

Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices1

SATA_A & SATA_B do not support RAID function.

Intel® B660 Chipset

• 1x USB 3.2 Gen2x2 20Gbps Type-C port on the back panel
• 1x USB 3.2 Gen 2 10Gbps Type-C port available through the internal connector
• 2x USB 3.2 Gen 1 5Gbps ports available through the internal connector
• 4x USB 2.0 ports on the back panel

USB Hub-GL3590

• 3x USB 3.2 Gen 2 10Gbps Type-A ports on the back panel

USB Hub-GL850G

• 4x USB 2.0 ports available through internal connectors

Realtek® ALC1200 Codec

• 7.1-Channel High Definition Audio
• Supports S/PDIF output

• 1x Realtek® 8125BG 2.5Gbps LAN controller

• 1x 24-pin ATX main power connector
• 2x 8-pin ATX 12V power connectors
• 6x SATA 6Gb/s connectors
• 2x M.2 slots (M-Key)
• 1x USB 3.2 Gen 2 10Gbps Type-C connector
• 1x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
• 2x USB 2.0 Type-A connectors (supports additional 4 USB 2.0 ports)
• 1x 4-pin CPU fan connector
• 1x 4-pin water-pump fan connector
• 2x 4-pin system fan connectors
• 1x Front panel audio connector
• 2x System panel connectors
• 1x Chassis Intrusion connector
• 1x Clear CMOS jumper
• 1x TPM module connector
• 1x TBT connector (supports RTD3)
• 1x Tuning Controller connector

• 4x EZ Debug LED
• 1x 4-pin RGB LED connector
• 2x 3-pin RAINBOW LED connectors

• USB 2.0 Port
• DisplayPort 1.4
• USB 3.2 Gen 2 10Gbps Type-A
• 2.5G LAN Port
• HD Audio Connectors
• HDMI 2.1 Port
• USB 3.2 Gen 2x2 20Gbps Type-C
• Optical S/PDIF OUT

• Micro-ATX Form Factor
• 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)