ASUS Prime 300 Series motherboards provide the solid foundation needed for your first build, plus flexibility to grow with your ambitions. We've melded all the good stuff that's packed into the latest processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime 300 Series motherboard, you build smart, easy and affordably.
ASUS Prime 300 Series motherboards provide the solid foundation needed for your first build, plus flexibility to grow with your ambitions. We've melded all the good stuff that's packed into the latest processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime 300 Series motherboard, you build smart, easy and affordably.Tune it your wayImproved DDR4 stability
ASUS OptiMem preserves memory signal integrity by routing traces and vias to the optimal PCB layer, and our T-Topology trace layout ensures time-aligned signaling by balancing trace lengths between memory slots. These enhancements allow the Prime 300 Series to support a wide range of dual and quad-DIMM memory kits, while providing your rig with the stability it needs to deal with any type of workload - whether you're gaming or running intensive applicationsCooler by design
Prime 300 Series features the most comprehensive cooling controls ever, configurable via ASUS Fan Xpert software or the UEFI BIOS.
4-pin PWM/DC fan
Each header can be set to monitor and react to up to three thermal sensors. Via Fan Xpert, you can also assign a sensor to monitor the temperature of supported ASUS graphics cards to ensure optimal cooling during GPU- or CPU-intensive workloads.Media-acclaimed UEFI BIOS
The UEFI BIOS is an early waypoint on any PC-building journey, and Prime 300 Series has one of the best in the business.
Can configure the fan's operating speed manually, or use the easy pre-configured fan profiles to select Standard, Silent, Turbo or Full Speed modes, plus automatic switch to full speed if the temperature hits 75°C.Ultrafast connectivityUSB 3.1 Gen 1 front-panel connector
USB 3.1 Gen 1 is right where you need it, with two super-speed headers for the front panel. Experience data-transfer speeds up to 10X faster than USB 2.0 with instant plug-and-play connectivity, and avoid back-breaking contortions in the hunt for hard-to-reach rear ports.M.2
Speed up with onboard M.2
With x4 PCI Express® 3.0/2.0 bandwidth, M.2 supports up to 32Gbps data-transfer speeds. It's the perfect choice for an operating system or application drive, providing fast access to data.Intel Optane memory
Intel Optane memory ready
Intel Optane™ is a revolutionary non-volatile memory technology supported by Prime 300 Series motherboards. Intel Optane memory modules accelerate attached storage to reduce boot and load times, so everything feels faster and more responsive.Reliable stability and compatibilitySafeSlot
Protect your graphics card investment
SafeSlot is the PCIe slot reinvented by ASUS and engineered to provide superior retention and shearing resistance. Manufactured in a single step using a new insert-molding process, SafeSlot integrates the slot with fortifying metal for an inherently stronger slot, which is then firmly anchored to the PCB through additional solder points.Built to Last
ASUS is the world's leading motherboard brand. Our motherboards are extensively tested for compatibility with more than 1,000 components and devices, and each new model undergoes a minimum of 8,000 hours of strict validation — offering the peace of mind of knowing that your ASUS motherboard is fit for all environments and applications. Choosing ASUS is an assurance of trouble-free DIY experiences.
5X Protection III
Hardware safeguards to ensure long-term durability.
520+ DDR4 compatibility
Industry-leading DDR4 memory compatibility for best flexibility and reassurance.
1000+ compatible devices
Compatibility with a range of CPUs, memory modules, graphics cards and more.
8000+ validation hours
Extensive testing with latest components for enhanced reliability, compatibility and safety.
Prime 300 Series motherboards are engineered with industry-leading 5X Protection III, employing the finest components, excellent circuit design and exacting standards to guarantee the quality and long-term durability of your investment. That means exceptional protection and stability for your build — thanks to decades of engineering experience from the world's leading motherboard brand.
Compatible devices and components
The superior compatibility of Prime 300 Series is evidenced by our extensive list of supported devices — which includes thousands of compatible components — and our Qualified Vendor List (QVL) that identifies memory compatibility. It all adds up to more choices for worry-free PC-building experiences.
ASUS motherboards offer superb endurance. We verify this by subjecting every board to more than 8,000 hours of stringent tests. A barrage of burn-in, environmental, compatibility, software and safety tests confirm that our motherboards are exceptionally robust. It also shows that ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.Upgrade to unrivalled audioOutstanding audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced!Visual beauty, virtual worldsAura Sync
Outshine the competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura Sync offers full lighting connected via the motherboard's RGB header, with a variety of functional presets for external LED strips.* And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.Brighten Up Your Build
LED-illuminated control for trace paths
Built-in LED lighting options illuminate your build in a variety of eye-catching styles.Beyond VR ready
Complete your immersion
Prime 300 series isn't just VR ready — it goes way beyond. The ASUS Beyond VR Ready marque means that Prime 300 series has been tested with loads of class-leading components to ensure that your productivity, gaming and entertainment needs are tuned for maximum performance. ASUS Beyond VR Ready opens up a new way to configure and build your dream system with total confidence.Intel B365 chipset
The Intel® B365 is a single-chipset design that supports Socket 1151 for 9th Gen and 8th Gen Intel® Core™, Pentium® Gold and Celeron® processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. Additionally, the B365 chipset provides a maximum of eight USB 3.1 Gen 1 ports, six SATA 6Gbps ports, and 32Gbps M.2 and PCIe 3.0 lane-speed support, for faster data retrieval. Intel B365 also supports integrated-graphics, so you'll enjoy the very latest in graphics performance.Ready for Socket 1151 for 9th / 8th Gen Intel® Core™, Pentium® Gold and Celeron® processors
This motherboard supports Socket 1151 for 9th Gen and 8th Gen Intel® Core™, Pentium® Gold and Celeron® processors, with integrated graphics, memory and PCI Express controllers to support onboard graphics output with dedicated chipsets, dual-channel (4-DIMM) DDR4 memory and 16 PCI Express 3.0/2.0 lanes for great performance.
ASUS Prime B365M-A. Processor manufacturer: Intel, Processor socket: LGA 1151 (Socket H4), Compatible processor series: Intel® Celeron® G, Intel® Core™ i3, Intel Core i5, Intel Core i7, Intel Pentium G. Supported memory types: DDR4-SDRAM, Memory slots type: DIMM, Supported memory clock speeds: 2133,2400,2666 MHz. Maximum graphics adapter memory: 1024 MB, Maximum resolution: 4096 x 2160 pixels. HDMI version: 1.4b. Ethernet interface type: Gigabit Ethernet, LAN controller: Realtek RTL8111H
|Processor socket||LGA 1151 (Socket H4)|
|Compatible processor series||Intel® Celeron® G, Intel® Core™ i3, Intel Core i5, Intel Core i7, Intel Pentium G|
|Maximum number of SMP processors||1|
|Supported memory types||DDR4-SDRAM|
|Number of memory slots||4|
|Memory slots type||DIMM|
|Supported memory clock speeds||2133,2400,2666 MHz|
|Maximum internal memory||64 GB|
|Maximum graphics adapter memory||1024 MB|
|Maximum resolution||4096 x 2160 pixels|
|USB 2.0 connectors||2|
|USB 3.2 Gen 1 (3.1 Gen 1) connectors||1|
|Number of SATA III connectors||6|
|S/PDIF out connector||Y|
|Front panel audio connector||Y|
|Front panel connector||Y|
|ATX Power connector (24-pin)||Y|
|Number of EATX power connectors||1|
|CPU fan connector||Y|
|Number of chassis fan connectors||2|
|Chassis intrusion connector||Y|
|12V power connector||Y|
|Rear panel I/O ports|
|USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity||4|
|USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity||1|
|Ethernet LAN (RJ-45) ports||1|
|PS/2 ports quantity||2|
|VGA (D-Sub) ports quantity||1|
|HDMI ports quantity||1|
|DVI-D ports quantity||1|
|Ethernet interface type||Gigabit Ethernet|
|LAN controller||Realtek RTL8111H|
|Motherboard form factor||micro ATX|
|Motherboard chipset family||Intel|
|Audio chip||Realtek ALC887|
|Audio output channels||7.1 channels|
|Windows operating systems supported||Windows 10 Education x64,Windows 10 Enterprise x64,Windows 10 Home x64,Windows 10 Pro x64,Windows 10 x64|
|PCI Express x1 (Gen 3.x) slots||2|
|PCI Express x16 (Gen 3.x) slots||1|
|Number of M.2 (M) slots||2|
|BIOS type||UEFI AMI|
|BIOS memory size||128 Mbit|
|Clear CMOS jumper||Y|
|System Management BIOS (SMBIOS) version||3.1|
|Processor special features|
|Intel Extreme Memory Profile (XMP)||Y|
|Weight & dimensions|