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| Overview | |
|---|---|
| Manufacturer | ASRock |
| Model | B660M Pro RS |
| Part Number | 90-MXBGW0-A0UAYZ |
| Form Factor | Micro ATX (mATX) |
| Dimensions | 244 mm x 244 mm |
| PCB | Sapphire Black, High Density Glass Fabric, 4-Layer Intel Memory POOL Technology |
| Chipset | Intel B660 |
| Color | Gray / Black |
| Processor | |
| Socket | LGA1700 |
| CPU Support | 14th, 13th & 12th Gen Intel Core™ Processors; Intel Pentium Gold & Celeron |
| Power Design | Digi Power, 8 Power Phase |
| Intel Technologies | Intel Hybrid Technology, Intel Turbo Boost Max 3.0 |
| Memory | |
| Type | DDR4 (Non-ECC, Unbuffered); ECC UDIMM (operates in non-ECC mode) |
| Slots | 4 x DDR4 DIMM (288-pin), Dual Channel |
| Max Capacity | 128 GB |
| Native Speed | DDR4-3200 |
| OC Speed Support | DDR4-2133 / 2400 / 2666 / 2933 / 3000 / 3200 / 3466 / 3600 / 3733 / 3800 / 4000 / 4200 / 4266 / 4600 / 4800 / 5333+ (OC) |
| XMP Support | Intel XMP 2.0 |
| Integrated Graphics | |
| GPU Architecture | Intel Xe Graphics (Gen 12) — CPU-dependent |
| Display Outputs | 1 x HDMI 2.1, 1 x DisplayPort 1.4 (independent controllers, dual display) |
| Max Resolution (HDMI) | Up to 4K (HDMI 2.1 TMDS Compatible) |
| Expansion Slots | |
| PCIe 4.0 x16 | 1 x (Steel Slot reinforced; supports NVMe SSD as boot disk) |
| PCIe 3.0 x16 | 1 x (supports NVMe SSD as boot disk) |
| PCIe 3.0 x1 | 1 x |
| Multi-GPU Support | AMD CrossFire capable; No SLI |
| Storage | |
| M.2 Slot 1 (M2_1) — Hyper M.2 | Key M, supports 2242 / 2260 / 2280, PCIe Gen4 x4 (64 Gb/s) — CPU-connected; Full Coverage M.2 Heatsink |
| M.2 Slot 2 (M2_2) — Ultra M.2 | Key M, supports 2280, SATA3 6.0 Gb/s & PCIe Gen3 x4 (32 Gb/s) — Chipset-connected; supports Intel Optane Memory H Series |
| M.2 WiFi Slot | 1 x M.2 Key-E (2230), for WiFi module |
| SATA III | 4 x SATA3 6.0 Gb/s connectors (SATA3_0 disabled if M2_2 occupied by SATA device) |
| RAID Support | Yes (Intel VMD); NVMe SSD bootable |
| ASRock U.2 Kit | Supported |
| Networking | |
| LAN Controller | Intel I219-V |
| LAN Speed | 10 / 100 / 1000 Mbps (Gigabit) |
| LAN Port | 1 x RJ-45 with ACT/LINK LED and SPEED LED; Full Spike Protection |
| Wireless | No onboard WiFi; M.2 Key-E slot supports optional WiFi/BT module; 3 antenna mounting points on rear I/O |
| Audio | |
| Codec | Realtek ALC897 |
| Channels | 7.1 CH HD Audio |
| Software Enhancement | Nahimic Audio (Sound Tracker, 360° radar, Surround Sound) |
| Rear Audio Jacks | 3 x 3.5mm (Line In / Front Speaker / Microphone) |
| Front Panel Header | 1 x HD Audio connector |
| ESD Protection | Full Spike Protection on all Audio ports |
| Rear I/O Ports | |
| PS/2 | 1 x PS/2 Mouse / Keyboard combo port |
| USB 3.2 Gen1 Type-A | 4 x (via ASMedia ASM1074 hub; ESD Protection) |
| USB 2.0 Type-A | 2 x (ESD Protection) |
| Video Output | 1 x HDMI 2.1, 1 x DisplayPort 1.4 |
| LAN | 1 x RJ-45 (Intel I219-V Gigabit) |
| Audio | 3 x 3.5mm audio jacks (Line In / Front Speaker / Mic) |
| Antenna Mounting | 3 x antenna mounting points |
| Internal Connectors & Headers | |
| ATX Power | 1 x 24-pin ATX |
| CPU Power | 1 x 8-pin 12V (Hi-Density Power Connector) |
| USB 3.2 Gen1 Internal | 1 x USB 3.2 Gen1 header (2 ports); ESD Protection |
| USB 3.2 Gen1 Type-C Front | 1 x Front Panel Type-C USB 3.2 Gen1 header; ESD Protection |
| USB 2.0 Internal | 2 x USB 2.0 headers (4 ports total); ESD Protection |
| Thunderbolt AIC | 1 x 5-pin Thunderbolt™ AIC connector (supports ASRock Thunderbolt 4 AIC Card) |
| CPU Fan | 1 x 4-pin CPU Fan connector (max 1A / 12W) |
| CPU / Water Pump Fan | 1 x 4-pin CPU/Water Pump Fan (Smart Fan Speed Control; max 2A / 24W) |
| Chassis / Water Pump Fans | 3 x 4-pin Chassis/Water Pump Fan connectors (Smart Fan Speed Control; 3-pin/4-pin auto-detect) |
| RGB LED Header | 1 x RGB LED header (12V/G/R/B, 5050 strip, max 12V/3A, 36W, up to 2m) |
| Addressable RGB LED Headers | 3 x ARGB LED headers (5V/Data/GND, WS2812B, max 5V/3A, 15W, up to 80 LEDs / 2m) |
| SPI TPM Header | 1 x SPI TPM header |
| Chassis Intrusion / Speaker | 1 x Chassis Intrusion and Speaker header |
| USB Summary | |
| USB 3.2 Gen1 Total | 7 (4 Rear Type-A, 2 Front Type-A, 1 Front Type-C) |
| USB 2.0 Total | 6 (2 Rear, 4 Front) |
| BIOS | |
| BIOS ROM | 128Mb AMI UEFI Legal BIOS with multilingual GUI |
| ACPI | ACPI 6.0 Compliant wake-up events |
| SMBIOS | SMBIOS 2.7 |
| Voltage Control | CPU Core/Cache, CPU GT, DRAM, VDD_IMC, VCCIN AUX, +1.05V PROC, +0.82V PCH, +1.05V PCH multi-adjustment |
| Monitoring & Fan Control | |
| Fan Tachometer | CPU, CPU/Water Pump, Chassis/Water Pump fans |
| Quiet Fan (Auto) | Auto-adjust chassis fan speed by CPU temperature |
| Fan Multi-Speed Control | CPU, CPU/Water Pump, Chassis/Water Pump fans |
| Voltage Monitoring | CPU Vcore, +1.05V_PCH, DRAM, VCCIN AUX, VCCSA, +1.05V PROC, +0.82V PCH, +12V, +5V, +3.3V |
| Case Open Detection | Yes |
| RGB & Lighting | |
| Onboard RGB | Yes (built-in illumination) |
| RGB Header | 1 x 12V/G/R/B (standard 5050, max 3A/36W, ≤2m) |
| ARGB Headers | 3 x 5V/Data/GND (WS2812B, max 3A/15W, ≤80 LEDs, ≤2m) |
| RGB Software | ASRock Polychrome SYNC (UEFI) |
| Software & Utilities | |
| Utilities | ASRock Motherboard Utility (A-Tuning), Polychrome SYNC UEFI, EZ Mode, Full HD UEFI, My Favorites in UEFI, Instant Flash, Easy RAID Installer |
| App Store | ASRock Live Update & APP Shop |
| POST Status Checker | ASRock POST Status Checker (PSC) — onboard LED indicators for CPU, DRAM, VGA, BOOT |
| Protection & Special Features | |
| Spike Protection | ASRock Full Spike Protection on all USB, Audio, and LAN ports |
| Steel Slot | ASRock Steel Slot (reinforced PCIe 4.0 x16; extra anchor points, stronger latch) |
| M.2 Heatsink | ASRock Full Coverage M.2 Heatsink (M2_1) |
| Premium Power Choke | Yes (ASRock Super Alloy) |
| TPM | 1 x SPI TPM header (Windows 11 ready) |
| In the Box | |
| Included Accessories | Quick Installation Guide, Support CD, I/O Panel Shield, 2 x SATA Data Cables, 3 x M.2 Screws, 1 x M.2 Standoff |






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