The Asrock B450M/ac R2.0 motherboard supports AMD Ryzen processors with Socket AM4 and offers a micro ATX form factor. It features DDR4 memory support with a maximum capacity of 128 GB across DIMM slots. The board supports PCI Express 3.0 and SATA III for HDD and SSD storage options, with RAID levels 0, 1, and 10. It also supports CrossFireX for multi-GPU setups and provides a maximum resolution of 4096 x 2160 pixels. USB Type-A connectors are included for connectivity.
The Asrock B450M/ac R2.0 motherboard supports AMD Ryzen processors with Socket AM4 and offers a micro ATX form factor. It features DDR4 memory support with a maximum capacity of 128 GB across DIMM slots. The board supports PCI Express 3.0 and SATA III for HDD and SSD storage options, with RAID levels 0, 1, and 10. It also supports CrossFireX for multi-GPU setups and provides a maximum resolution of 4096 x 2160 pixels. USB Type-A connectors are included for connectivity.
in 3 offers
The lowest price for ASRock B450M/AC AM4 Micro-ATX Motherboard right now is $116.19 at AliExpress.com - AliExpress-226247430, compared across 3 retailers.
The all-time low was $102.69 on 5 May 2026 — today's price is 13% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 1 July 2026.
ASRock B450M/AC AM4 Micro-ATX Motherboard
The Asrock B450M/ac R2.0 motherboard supports AMD Ryzen processors with Socket AM4 and offers a micro ATX form factor. It features DDR4 memory support with a maximum capacity of 128 GB across DIMM slots. The board supports PCI Express 3.0 and SATA III for HDD and SSD storage options, with RAID levels 0, 1, and 10. It also supports CrossFireX for multi-GPU setups and provides a maximum resolution of 4096 x 2160 pixels. USB Type-A connectors are included for connectivity.
The Asrock B450M/ac R2.0 motherboard supports AMD Ryzen processors with Socket AM4 and offers a micro ATX form factor. It features DDR4 memory support with a maximum capacity of 128 GB across DIMM slots. The board supports PCI Express 3.0 and SATA III for HDD and SSD storage options, with RAID levels 0, 1, and 10. It also supports CrossFireX for multi-GPU setups and provides a maximum resolution of 4096 x 2160 pixels. USB Type-A connectors are included for connectivity.
Last updated at 01/07/2026 20:19:50
ASROCK B450M/AC R2.0 Motherboard AMD B450 AM4 DDR4 M.2 HDMI support Ryzen 7 4700G 5700 5600GT
Free delivery
ASRock B450MAC R2.0 AM4 AMD Promontory B450 SATA 6Gbs Micro ATX AMD Motherboard
Delivery between 6–10 July $15.52
B450M/AC R2.0 AM4 AMD Promontory B450 SATA 6Gb/s Micro ATX AMD Motherboard
Delivery between 8–11 July $29
originally posted on ebay.com
Great little motherboard... I installed a AMD Ryzen 7 2700X CPU and the performance is excellent. I have always found AsRock motherboards to perform well and to be a fantastic value!
originally posted on newegg.com
It works great. The BIOS itself is also feature-rich. It works great with Linux. Fedora recognized everything. I'm running it with a 27inch 4K monitor.
originally posted on neweggbusiness.com
This board only works with specific ram. So make sure to check first because the ripjaw I bought for it was not compatible.
| CPU Socket Type | AM4 |
| Chipset | AMD Promontory B450 |
| Number of Memory Slots | 4x288pin (DDR4) |
| Maximum Memory Supported | 128GB , |
| Channel Supported | Dual Channel |
ASROCK B450M/AC R2.0 Motherboard AMD B450 AM4 DDR4 M.2 HDMI support Ryzen 7 4700G 5700 5600GT
Free delivery
ASRock B450MAC R2.0 AM4 AMD Promontory B450 SATA 6Gbs Micro ATX AMD Motherboard
Delivery between 6–10 July $15.52
B450M/AC R2.0 AM4 AMD Promontory B450 SATA 6Gb/s Micro ATX AMD Motherboard
Delivery between 8–11 July $29
Great little motherboard... I installed a AMD Ryzen 7 2700X CPU and the performance is excellent. I have always found AsRock motherboards to perform well and to be a fantastic value!
It works great. The BIOS itself is also feature-rich. It works great with Linux. Fedora recognized everything. I'm running it with a 27inch 4K monitor.
This board only works with specific ram. So make sure to check first because the ripjaw I bought for it was not compatible.
What a clownshow. Order cancelled because the item is actually not available in stock. This happens far too often.
Don't listen to the person giving this 1 star because the M.2 slot doesn't work. In many cases you need to go into UEFI/BIOS and adjust M.2 drive settings for it be visible. Even if they happened to purchase a bad board that doesn't mean all or most of them will have the same issue. I've used this same board in about 10 builds due to it having built in WiFi & Bluetooth and also being a great price and haven't had any issues with any of them. And yes I used M.2 drives in all of them. The only way to go these days in my opinion. Great board overall for the price.
Glad I bought it but I feel I could have gotten a similar performance board with similar features for a much lower price. Still very good if you don't want to have trouble with wifi adapters.
Recommended as it's worth the price and it serves mt requirements just fine. If you are looking for more fan/RGB headers or high end vrms go for Z series!!??
First time builder, this motherboard made it easy. everything hooked up quickly and worked from the get go. Wireless works perfectly, currently using the wifi 5g as my main connection
It performed well while I have base clocked ram, as soon as I upgraded and overclocked the board died because the vrms couldnt handle it. Overall, a great board for a base pc.
I built a cheap PC build with this motherboard and it's awesome. It allows for upgrades in the future and has 4 slots for ram. I'm using the ryzen 5 1600 AF but this board can go all the way to 3000 series if necessary.
| CPU Socket Type | AM4 |
| Chipset | AMD Promontory B450 |
| Number of Memory Slots | 4x288pin (DDR4) |
| Maximum Memory Supported | 128GB , |
| Channel Supported | Dual Channel |
