ASRock B450M PRO4 Micro ATX AMD AM4 Motherboard with SATA 6Gb/s, USB 3.1, HDMI, and DDR4

I have this board for two builds. The price is right and offers features on more expensive boards. It has two 12 volt RGB and a 5v RGB header, heat sinks on the VRAM, 4 DIM slots, two M.2 slots (one can be used for NVMe), easy BIOS, works out of the box for every Ryzen 1st gen I have tried. I have another ASROCK board around the same price point and it has no RGB headers, no heat sinks over the VRAM and just two DIM slots and one M.2 slot. It has more features than an MSI board I had used for another Ryzen build that was nearly double the price. One is outfitted with a Ryzen 5 1600X with 32GB of G-Skill Flare X, an M.2 SSD, 2TB HDD and NVIDIA 1060 6GB, the other is a Ryzen 7 1700, 32GB of G-Skill FlareX, Patriot M.2 SSD, Western Digital M.2 SSD, SATA3 SSD, 4TB HDD, RX580 8GB.If you're building a Ryzen 1st or 2nd gen machine, I would definitely recommend this board due to the features it offers at the price point. Neither have failed me yet.05/12/20 Update: Now I have one rocking a Ryzen 5 3600X with a BIOS update to 3.50. No issues.05/20 to 10/20 Update: Transplanted the motherboard into an HTPC case so I can fit into a smaller space in my entertainment system and game on my 65" TV. So upgraded to a GTX 1660 6GB card (because of small form factor) and 32GB (4X8GB) or G.Skill Trident RGB RAM DDR4 2400 overclocked to 3200 that I had sitting around. Everything worked fine and all games were buttery smooth.Being the eternal tinkerer, I can't leave well enough alone so I decided to max out the RAM at 64GB with some G.Skill Aegis (4X16GB) DDR4 3200 I had laying around for a different build (workstation), I needed to test the RAM and make sure it worked and to run Memtest before the return window closed. I pulled the 4 sticks of overclocked G.Skill Trident RGB out, and tossed 4 sticks of the G.Skill Aegis RAM in....wouldn't boot up :(This is a common issue I have run into when building rigs, my usual solution when building a new rig or introducing new RAM if it doesn't boot with all RAM installed is to start off with 1 stick in the primary RAM slot, which worked in this case. I let it boot into BIOS, verify the RAM, then shut it down. For testing purposes, I did this with the remaining sticks of RAM, had to make sure they all worked. Then I installed two sticks of RAM, booted into BIOS, shut it down. Tossed in the next two sticks of RAM, booted into BIOS, set XMP, reboot into windows and wham, I'm in.Because I can't leave well enough alone, I went back into BIOS and tried overclocking the RAM....NOPE - would not overclock showing the limitations of cheap G.Skill Aegis RAM versus the much more expensive G.Skill Trident RGB sticks which can be cranked up. Still have the 64GB of RAM installed (definitely overkill), works great so I guess I'll keep them in since the workstation is getting different RAM anyway. So far so good, great MoBo, all the addressable RGB still works great (Wraith Spire LED, Corsair RGB Fans, LED strips), will probably buy another board for another build to use up spare parts I have laying around, like the G.Skill Trident RGB sticks I just pulled out. It has kinda raised in price a little bit though (thanks to Linus Tech Tips), so I have looked at other MoBo's in the same price range, they just don't have the feature set so looks like I'll pick up #3.Update 11/24/20I like this board so much that I bought another one. Now I have covered 1st, 2nd and 3rd gen Ryzen on it. By the way, this latest one had the sticker that it was 3rd Gen Ryzen ready, but I stuck a 2700X in this one. I added a few pics, Darkflash Mesh case, Neon lights really make it pop, why not, it has two 12v RGB headers and a 5v RGB header. This build was to mop up parts I had laying around.

Long story short I bought this motherboard because my PCI slot on my ASRock A320M/ac motherboard stopped working, causing my GPU to stop giving a video output. Now, on the other hand...This motherboard is heavily used for prebuilt/budget gaming pc builds due to the memory compatibility, cpu socket, and cpu compatibility. I am running a AMD Ryzen 3 3300X 4-Core Processor on top of an AMD Radeon RX 5500XT 8GB graphics card and the motherboard takes the power and performance perfectly, no overvolts (of course because we all know cheap motherboards can be bombs lol) and no stress installing the motherboard, very easy to install and is honestly a perfect motherboard for entry level gaming. You get 4 ram slots that support up to 64GB of ram with speeds up to 3200MHz! It's perfect, I myself have 16GB of DDR4-3000MHz overvolted to 3200MHz and the motherboard has no problem. Once again, a great entry level board for new gamers, great affordable price, nice build quality

Just built with this...AMD 3 series 2200g with on board graphics. I/O ports work as intended.Can't beat the value of this board. B450 will be upgradable to 8 core down the road if/when the price drops due to 3 series Ryzen being released and I decide to get a dedicated graphics card. Honestly because I am old and don't game but do photo editing and the computer pretty much in its entirety for everything, this combo with 2200g and 16g of 3200 Ram rocks like the As-rock name. Asrock is the real deal. I took a bit of chance on them back in 2012 and my Asrock 970 Extreme4 now with latest BIOS is still operating perfectly with Phenom II CPU and GTX 1050.Asrock for the win. Great and intuitive BIOS. B450 will have you covered for upgrading unless you go crazy and need more power to drive 12 cores. This board will handle 8 cores with overclocking.It is also a handsome board. Not gimmicky or blingy but has RGB headers for those inclined. I run it in a Fractal Define C min TG case. Lovely combo and easy build.

This is a nice solid build board with lots of features, so far I think it's the best for the bucks spent.Pros:-- Easy to setup-- Lots of features, including easy to do OC-- Works flawlessly with Ryzen 5 3600 out of box-- 4 memory module slots available-- Supports M.2 SSD-- ASRock support responded my question quickly than I expected, nice serviceCons:-- Not supporting high frequency memory out of box, like 3200mHz, you have to adjust bios to make it work, and according to ASRock support, you need to put it into specific memory slot and no guaranty to work(even though manual states it does support 3200mhz). I couldn't make the Team 16GB 3200mhz working for the system and had to give up(no problem for 2666mHz memory module)-- Major problem: no where to state you either need a graphics supported CPU(Ryzen 5 3600 does NOT have it) or you need a standalone video card, otherwise you will not be able to get any output. This makes me think the board is not booting, or it's defect, although it has a onboard video output which not working at all-- Front panel connection(power switch, hdd LED, reset switch) is a little confused, not labeled clearly-- Somehow, CPU fan 1 does not work well for cooling fan, but CPU fan 2 works fineOverall, it's nice mainboard and worth the money. My system(2x8gb 2666Mhz, Ryzen 5 3600, 512 SSD, ATI WX9100 card etc.) runs smoothly like a charm.