MSI Pro B660M-B DDR4 Intel Motherboard
MPN MSI-PRO-B660M-B-DDR4 · Brand MSI · mATX
The MSI Pro B660M-B DDR4 is an Intel B660 M-ATX motherboard for 12th Gen LGA1700 processors, featuring PCIe 4.0, up to 64 GB DDR4 (XMP 4600+ MHz OC), a 2.5G LAN controller, and one PCIe 4.0 x4 M.2 slot with M.2 Shield Frozr heatsink
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Overview
The MSI Pro B660M-B DDR4 is a Micro-ATX motherboard built on Intel's B660 chipset and designed for 12th Generation Intel Core, Pentium Gold, and Celeron processors using the LGA1700 socket. Measuring 9.6 in. x 8.7 in. (24.4 cm x 22.0 cm), it fits neatly into standard M-ATX and compatible ATX chassis, making it a practical foundation for compact workstation or productivity builds. Memory support is handled by two DDR4 DIMM slots with a combined capacity of up to 64 GB. JEDEC-standard speeds cover 2133, 2666, 2933, and 3200 MHz, while Intel XMP profiles unlock overclocked frequencies up to 4600+ MHz (1DPC 1R) or 4000+ MHz (1DPC 2R). Dual-channel mode is supported for improved memory bandwidth across compatible configurations. Storage connectivity includes one M.2 Key-M slot routed directly from the CPU, supporting PCIe 4.0 x4 and 2242, 2260, and 2280 form-factor drives. The slot is covered by MSI's M.2 Shield Frozr heatsink to help manage thermal output under sustained workloads. Four SATA 6Gb/s ports via the B660 chipset provide additional drive capacity, and the board supports RAID 0, 1, 5, and 10 across SATA devices. Expansion is handled by one PCIe 4.0 x16 slot (CPU-connected) for a discrete graphics card, complemented by one PCIe 3.0 x1 slot from the chipset. Integrated display output includes one VGA port (up to 2048×1536 @ 50 Hz or 1920×1200 @ 60 Hz) and one HDMI 2.1 with HDR support up to 4K 60 Hz, for use with processors that include integrated graphics. Networking is provided by a Realtek RTL8125BG 2.5Gbps LAN controller, delivering faster throughput than standard gigabit solutions for file transfers and low-latency workloads. Audio is handled by a Realtek ALC897 codec delivering 7.1-channel High Definition Audio. USB connectivity spans six USB 3.2 Gen 1 (5Gbps) ports — four Type-A on the rear panel and two via an internal header — plus two USB 2.0 Type-A ports on the rear panel and four additional USB 2.0 ports via internal connectors. The rear panel also includes PS/2 keyboard/mouse, VGA, HDMI, and audio jacks. Internal headers include a 4-pin CPU fan, two 4-pin system fan connectors, front panel audio, TPM module, chassis intrusion, Clear CMOS jumper, and serial port connector. Four EZ Debug LEDs assist with rapid troubleshooting at POST. The UEFI AMI BIOS (256 Mb flash, ACPI 6.4, SMBIOS 3.4) supports multi-language operation and Total Fan Control for up to four temperature targets. Verified Specifications: - Chipset: Intel B660 - Socket: LGA1700 - Form Factor: M-ATX, 9.6 in. x 8.7 in. (24.4 cm x 22.0 cm) - Memory: 2x DDR4 slots, max 64 GB; JEDEC up to 3200 MHz; XMP OC up to 4600+ MHz - M.2: 1x Key-M, PCIe 4.0 x4, supports 2242/2260/2280 - SATA: 4x 6Gb/s ports; RAID 0/1/5/10 - PCIe: 1x PCIe 4.0 x16 (CPU), 1x PCIe 3.0 x1 (chipset) - LAN: Realtek RTL8125BG 2.5Gbps - Audio: Realtek ALC897, 7.1-ch HD Audio - USB: 6x USB 3.2 Gen 1 (5Gbps), 6x USB 2.0 (total) - Display: 1x VGA, 1x HDMI 2.1 (4K 60Hz HDR) - Warranty: 3 Years
Datasheet
| Warranty | 3 Years |
|---|---|
| Form Factor | mATX |
| Chipset | Intel® B660 Chipset |
| Lan | 1x Realtek® RTL8125BG 2.5Gbps LAN controller |
| USB | Intel® B660 Chipset6x USB 3.2 Gen 1 5Gbps ports (4 Type-A ports on the back panel, 2 ports through the internal connector)2x USB 2.0 Type-A ports on the back panelUSB Hub-GL850G4x USB 2.0 ports available through internal connectors |
| Raid | Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices |
| Audio | Realtek® ALC897 Codec7.1-Channel High Definition Audio |
| Memory | 2x DDR4 memory slots, support up to 64GB 1Supports 1R 2133/ 2666/ 2933/ 3200 MHz (by JEDEC & POR)Max overclocking frequency:1DPC 1R Max speed up to 4600+ MHz1DPC 2R Max speed up to 4000+ MHzSupports Dual-Channel modeSupports non-ECC, un-buffered memorySupports Intel® Extreme Memory Profile (XMP) |
| Storage | 4x SATA 6Gb/s ports (From B660 chipset) 11x M.2 slot (Key M)M2_1 slot (From CPU)Supports PCIe 4.0 x4Supports 2242/ 2260/ 2280 storage devices |
| Processor | Supports 12th Gen Intel® Core™ Processors, Pentium® Gold and Celeron® ProcessorsProcessor socket LGA1700 |
| Led Feature | 4x EZ Debug LED |
| Bios Features | 1x 256 Mb flashUEFI AMI BIOSACPI 6.4, SMBIOS 3.4Multi-language |
| Expansion Slot | 1x PCIe 4.0 x16 slot (from CPU) 1x PCIe 3.0 x1 slot (from B660 chipset) |
| Onboard Graphics | 1x VGA port, supports a maximum resolution of 2048×1536 @50Hz, 2048×1280 @60Hz, 1920×1200 @60Hz 1/21x HDMI 2.1 with HDR port, supports a maximum resolution of 4K 60Hz |
| Power Connectors | 1x 24-pin ATX main power connector1x 8-pin ATX 12V power connector |
| Internal Connectors | 1x 24-pin ATX main power connector1x 8-pin ATX 12V power connector4x SATA 6Gb/s connectors2x USB 2.0 connector (support additional 4 USB ports)1x USB 3.2 Gen 1 5Gbps connector (support additional 2 USB ports)1x 4-pin CPU fan connector2x 4-pin system fan connectorx1x Front panel audio connector2x System panel connectors1x Serial port connector1x TPM module connector1x Chassis Intrusion connector1x Clear CMOS jumper1x Tuning Controller Connector |
| Back Panel Connectors | VGAKeyboard / MouseLAN portAudio connectorHDMIUSB 2.0USB 3.2 Gen 1 5GbpsType-A |
