
ASRock B365M Pro4
Based on Intel B365 chipset and built with superb thermal design, the B365M Pro4 motherboard allows you to unleash the full performance of 9th/8th Intel Core processors of up to eight cores. Beyond its micro ATX form factor, this board offers an abundance of capability and features to build your powerhouse, including quad DIMM slots, two PCIe x16 slots with AMD Quad CrossFireX ready, two Ultra M.2 connectors (one with heatsink), and reversible USB Type-C port. It also goes with today's RGB trend, by including RGB LED headers and an addressable RGB LED header onboard. The Super Alloy components and Digi Power design guarantee unbeatable quality, stability and reliability, making the ASRock B365M Pro4 a solid foundation for your next dream system.
- Supports 9th and 8th Gen Intel® Core™ Processors (Socket 1151)
- Supports DDR4 2666
- 2x PCIe 3.0 x16, 1x PCIe 3.0 x1 and 1x M.2 Key E for WiFi
- AMD Quad CrossFireX™
- Graphics Output Options: HDMI, DVI-D and D-Sub
- 7.1 CH HD Audio (Realtek ALC892 Audio Codec) and ELNA Audio Caps
- 6x SATA3, 2x Ultra M.2 (2x PCIe Gen3 x4 and 1x SATA3)
- 7x USB 3.1 Gen1 (2 Front, 4 Rear, 1 Type-C)
- Intel® Gigabit LAN

Your PC Transformed
This motherboard exudes a stylish design and provides immense functional reliability.

This motherboard features onboard RGB headers and an addressable RGB header that allow the 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.

The addressable RGB LED header supports a WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and an overall length within 2 meters.
The RGB LED header supports standard 5050 RGB LED strips (12V/G/R/B), with a maximum power rating of 3A (12V) and lengths within 2 meters.


Equipped with an M.2 slot that supports both SATA3 6Gb/s and PCIe Gen3 x4, the Ultra M.2 interface pushes data transfer speeds up to 32Gbps and is compatible with ASRock's U.2 Kit for installing some of the world's fastest U.2 PCIe Gen3 x4 SSDs.
Please refer to the product's specification page for more details.

The massive full-coverage M.2 heatsink is able to dissipate heat efficiently to ensure your high-speed M.2 SSD is always working at its best.

Extra-large aluminum-alloy heat sinks effectively take away heat from the MOSFET and chipset so that your whole system may perform more stably.

The advanced PCI-E steel slot packed with a solid cover prevents any signal interference with graphics cards. It also ensures that heavy graphics cards can be properly and safely installed in the PCI-E slot.

Intel® LAN provides the best throughput performance, lower CPU utilization, enhanced stability and is able to deliver ultimate network experience to users!

These ASRock motherboards support Intel® Optane™ memory technology and Intel® Optane™ storage technology to redefine a new standard of high performance and responsiveness.

POOL (Planes on Outer Layers) technology allows 4-layer boards to utilize stripline routing instead of micro-strip routing, giving the motherboard better electrical properties and performance.


Compared to traditional chokes, ASRock's premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Being a pure-black PCB design, the new Sapphire Black PCB represents rock-solid quality and gives each motherboard a more mysterious touch.

The High-Density Glass Fabric PCB design reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.

Unlike traditional motherboards that use analog power, this motherboard uses a next-generation digital PWM (Pulse-Width Modulation) design, which provides CPU Vcore voltage more efficiently and smoothly, so that the stability and lifespan of the motherboard is greatly enhanced.

Besides the onboard LAN port, users have the option of using 802.11ac wireless connections by utilizing the M.2 (Key E) slot.
*Wi-Fi module is not included.

These motherboard come complete with all three types of the world's most popular connectors! Users can enjoy their choice of D-Sub, DVI-D or HDMI.

Graphics, graphics and even more graphics! You've demanded more eye candy, so this motherboard supports Triple Monitor. You may choose up to three display interfaces from the rear I/O to connect monitors and use them simultaneously without installing another graphics card.

Who says high-quality audio is only available on high-end motherboards? ASRock applied ELNA audio capacitors on mainstream and entry-level motherboards! Compared with traditional solid caps, the leakage current of ELNA audio caps is merely 3uA. This is the key to reduce noise level significantly and satisfy even the pickiest audiophiles.

A-Tuning is ASRock's multi purpose software suite with a new interface, more new features and improved utilities.

ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.

Some sensitive digital components on the motherboard are vulnerable to power surges that can cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.