B660M Steel Legend

• Supports 12th Gen Intel Core™ Processors (LGA1700)


• 9 Phase Dr.MOS Power Design


• Supports DDR4 5000MHz (OC)


• 1 PCIe 5.0 x16, 2 PCIe 3.0 x1


• 1 M.2 Key-E for WiFi


• Graphics Output Options: HDMI, DisplayPort


• Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio


• 6 SATA3


• 1 Hyper M.2 (PCIe Gen4 x4)


• 1 Hyper M.2 (PCIe Gen4 x4 & SATA3)


• 1 Front USB 3.2 Gen2x2 Type-C


• 6 USB 3.2 Gen1 (4 Rear, 2 Front)


• 6 USB 2.0 (2 Rear, 4 Front)


• Dragon 2.5G LAN

Unique Feature

ASRock USB 3.2 Gen2
- ASRock Front Panel Type-C USB 3.2 Gen2x2 Header (20 Gb/s)
ASRock Super Alloy
- Premium Power Choke
- 50A Dr.MOS
- Premium Memory Alloy Choke (Reduces 70% core loss compared to iron power choke)
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
- Matte Black PCB
- High Density Glass Fabric PCB
- 2oz Copper PCB
2.5G LAN
ASRock Steel Slot
ASRock Full Coverage M.2 Heatsink
ASRock Hyper M.2 (PCIe Gen4x4)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

CPU

- Supports 12th Gen Intel Core™ Processors (LGA1700)
- Digi Power design
- 9 Power Phase design
- Supports Intel Hybrid Technology
- Supports Intel Turbo Boost Max 3.0 Technology

Chipset

- Intel B660

Memory

- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- Supports DDR4 non-ECC, un-buffered memory up to 5000+(OC)*
- Supports ECC UDIMM memory modules (operate in non-ECC mode)
- Max. capacity of system memory: 128GB
- Supports Intel Extreme Memory Profile (XMP) 2.0
- 15µ Gold Contact in DIMM Slots

*Supports DDR4 3200 natively.

BIOS

- 128Mb AMI UEFI Legal BIOS with multilingual GUI support
- ACPI 6.0 Compliant wake up events
- SMBIOS 2.7 Support
- CPU Core/Cache, CPU GT, DRAM, VDD_IMC, VCCIN AUX, +1.05V PROC, +1.8V PROC, +0.82V PCH, +1.05V PCH Voltage Multi-adjustment

Graphics

- Intel Xe Graphics Architecture (Gen 12)
- Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers
- Supports HDMI 2.1 TMDS Compatible with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
- Supports DisplayPort 1.4 with DSC (compressed) max. resolution up to 8K (7680x4320) @ 60Hz / 5K (5120x3200) @ 120Hz
- Supports HDCP 2.3 with HDMI 2.1 TMDS Compatible and DisplayPort 1.4 Ports

*Intel UHD Graphics Built-in Visuals and the VGA outputs can be supported only with processors which are GPU integrated.

Audio

- 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
- Supports Surge Protection
- Gold Audio Jacks
- Nahimic Audio

LAN

- 2.5 Gigabit LAN 10/100/1000/2500 Mb/s
- Dragon RTL8125BG
- Supports Dragon 2.5G LAN Software
- Smart Auto Adjust Bandwidth Control
- Visual User Friendly UI
- Visual Network Usage Statistics
- Optimized Default Setting for Game, Browser, and Streaming Modes
- User Customized Priority Control
- Supports Wake-On-LAN
- Supports Lightning/ESD Protection
- Supports Energy Efficient Ethernet 802.3az
- Supports UEFI PXE

Slots

- 1 x PCIe Gen5x16 Slot*
- 2 x PCIe Gen3x1 Slots
- 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module and Intel CNVi (Integrated WiFi/BT)
- 15µ Gold Contact in VGA PCIe Slot (PCIE1)

*Supports NVMe SSD as boot disks

Storage

- 4 x SATA3 6.0 Gb/s Connectors*
- 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061
- 1 x Hyper M.2 Socket (M2_1, Key M), supports type 2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 SATA3 6.0 Gb/s & PCIe Gen4 x4 (64 Gb/s) mode

*If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will be disabled.

Supports Intel Optane™ Technology (M2_2 only)
Supports Intel Volume Management Device (VMD)
Supports NVMe SSD as boot disks
Supports ASRock U.2 Kit

RAID

- Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices

Connector

- 1 x SPI TPM Header
- 1 x Chassis Intrusion and Speaker Header
- 1 x RGB LED Header*
- 3 x Addressable LED Headers
- 1 x CPU Fan Connector (4-pin)
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
- 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
- 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
- 1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
- 1 x Front Panel Audio Connector
- 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
- 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s) (Supports ESD Protection)

*Supports in total up to 12V/3A, 36W LED Strip

Support in total up to 5V/3A, 15W LED Strip

The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.

The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
CPU_FAN2/WP, CHA_FAN1~3/WP can auto detect if 3-pin or 4-pin fan is in use.

Rear Panel I/O

- 3 x Antenna Mounting Points
- 1 x PS/2 Mouse/Keyboard Port
- 1 x HDMI Port
- 1 x DisplayPort 1.4
- 1 x Optical SPDIF Out Port
- 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)
- 2 x USB 2.0 Ports (Supports ESD Protection)
- 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
- 1 x BIOS Flashback Button
- HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)

Software and UEFI

Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock Polychrome SYNC*
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock My Favorites in UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Easy RAID Installer

*These utilities can be downloaded from ASRock Live Update & APP Shop.

Support CD

- Drivers, Utilities, AntiVirus Software (Trial Version)

Accessories

- Quick Installation Guide, Support CD, I/O Shield
- 2 x SATA Data Cables
- 3 x Screws for M.2 Sockets
- 1 x Standoff for M.2 Socket

Hardware Monitor

- Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans
- Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans
- CASE OPEN detection
- Voltage monitoring: CPU Vcore, +1.05V_PCH, DRAM, VCCIN AUX, VCCSA, +1.05V PROC, +0.82V PCH, +12V, +5V, +3.3V

Form Factor

- Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm
- 2oz Copper PCB

OS

- Microsoft Windows 10 64-bit / 11 64-bit

Certifications

- FCC, CE
- ErP/EuP ready (ErP/EuP ready power supply is required)