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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
ASRock B660M STEEL LEGEND Motherboard, Intel Socket 1700, 12th Gen, DDR4, Micro ATX, 9 Phase Dr.MOS Power Design, 1x PCIe 5.0 x16, 2x PCIe 3.0 x1, 1x M.2 Key-E for WiFi, 6x USB 3.2 Gen1, Dragon 2.5G LAN, HDMI, DisplayPortSupports 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 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
Steel Legend represents the philosophical state of rock-solid durability and irresistible aesthetics. Built around most demanding specs and features, the Steel Legend series aims at daily users and mainstream enthusiasts! Providing a strong array of materials/components to ensure a stable and reliable performance.
Optimized VRM Design
Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.
PCIe 5.0 + Surface-Mount Tech
Compares to conventional DIP style PCIe slot, the SMT type PCIe slot improves signal flow and maximize stability under high speed, a key breakthrough to fully support the lighting speed of the latest PCIe 5.0 standard.
The latest PCI Express 5.0 is capable to perform a breathtaking bandwidth of 128GBps, ready to unleash the full potential of future high end graphic cards.
Nahimic Audio
Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant and rich with details.
POLYCHROME RGB
In addition to the built-in RGB illumination, it also features onboard RGB headers and an addressable RGB header that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.
High Speed M.2 Solution
This motherboard is capable of accomadating multiple M.2 storage devices, one of which can support PCI Express 4.0 M.2 SSD, it is capable of performing twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.
Dragon 2.5 Gb/s LAN>
The intelligent 2.5Gb/s LAN platform is built for maximum networking performance for the demanding requirements of home networking, content creators, online gamers and high-quality streaming media. Boost networking performance up to 2.5X the bandwidth compared to the standard gigabit Ethernet, you’ll enjoy the faster and uncompromised connectivity experience for gaming, file transfers and backups.
Base Frequency Boost (BFB) Technology
BFB Technology allow the use of increasing TDP to enjoy the base frequency boost with the hidden power of processors with users' non K series CPUs and ASRock’s selected 600 series motherboards
While ASRock BFB breathes life into non K series CPUs, the boost frequency currently still depends on the cooling system applied on your rig.
Front USB 3.2 Gen2x2 Type-C
The latest USB 3.2 Gen2x2 Type-C delivers up to 20 Gbps data transfer rate which is 2x as fast as previous generation, providing a blazing fast data transfer interface with reversible USB Type-C design that fits the connector either way.
BIOS Flashback
Get the most convenient BIOS flashing with just a simple click. Users can easily achieve the latest BIOS support with a USB and power supply, No CPU, RAM or other components required.
M.2 (KEY E) For WiFi
Besides the onboard LAN port, users may also choose 802.11ac wireless connections by M.2 (Key E) slot.
*Wi-Fi module is not included.
Specification
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 5333+(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
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
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
CPU:
- 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode
Chipset:
- 2 x PCIe 3.0 x1 Slots (PCIE2 and PCIE3)
- 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)
Storage
CPU:
- 1 x Hyper M.2 Socket (M2_1, Key M), supports type 2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 SATA3 6.0 Gb/s & PCIe Gen4x4 (64 Gb/s) modes
- 4 x SATA3 6.0 Gb/s Connectors
ASMedia ASM1061:
- 2 x SATA3 6.0 Gb/s Connectors
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)
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
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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 137 reviews
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Product Reviews
★★★★★ 5
Great sheet set
Color: Blush Pink, Size: Full
Super soft right out of the package. Thin material but should be perfect for cool nights. Blush pink is the perfect shade of pink. Love this set. Highly recommended especially at this price point.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Perfect Lightweight Sheets for Sensitive Hot sleepers
Color: Cream, Size: Queen
These sheets are soft, thin, and absolutely perfect for me. I have advanced CRPS and erythromelalgia, so I deal with severe nerve burning and heat sensitivity and cannot tolerate being overheated at all. I keep our AC between 56–64 degrees constantly, and since our studio is small, it usually stays around 61–63.
These sheets have been a lifesaver for sleep. They are lightweight, breathable, and don’t trap heat, which helps me avoid extreme flare-ups and the intense burning pain I deal with. I'm bedridden so I need to be comfortable. They feel comfortable against my skin and don’t worsen my symptoms when I’m already in a lot of pain and look nice, wash nicely.
For the price, they are also a great value. I’m genuinely grateful to have found something that helps me rest more comfortably. Will be buying more for us and gifts.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Sheet set
Color: Burgundy, Size: Queen
This lightweight microfiber sheet set stands out for its softness, comfort, and elegant design. Its fabric feels cool to the touch, withstands daily use, and is easy to wash, retaining its vibrant color wash after wash. It is an excellent choice for adding a cozy and sophisticated touch to the bedroom at an affordable price.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Great set of sheets
Color: Blue Pinstripe, Size: Twin
These microfiber sheets are incredibly soft and comfortable, especially for the price. I purchased the blue and white set for my daughter’s bed, and she loves them. The colors are bright and exactly as pictured. They fit the mattress well, don’t slip off the corners, and wash up nicely without pilling or fading. The brushed microfiber feels cozy and lightweight, making them great for year-round use. Overall, a great value and I would definitely buy another set.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Bold Colors, Great Quality, and an Amazing Price - Perfect Everyday Sheets
Color: Black, Size: Full
The Amazon Basics lightweight bed sheets have been such a great buy for my boys’ bedrooms. They come in a wide variety of colors, which made it easy to match each room’s style — and the colors stay bold and vibrant even after multiple washes, which honestly surprised me.
The quality is excellent for the price. The fabric stays soft, doesn’t pill, and holds up well to frequent washing (a must in kids’ rooms!). Each set includes a fitted sheet, flat sheet, and two pillow shams, which makes the value even better — most sets at this price point don’t include that many pieces.
Overall, these sheets are affordable, durable, colorful, and comfortable. I loved them enough to buy them in multiple colors, and they’ve held up beautifully. A fantastic budget-friendly choice for any household.
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Reviewed in the United States on May 31, 2026