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Msi B350m Mortar Am4 Amd B350 Sata 6gb/s Usb 3.1 Hdmi Micro Atx Motherboard

MPN: B350M Mortar | SKU: BX3924
Regular Price: $215.56
Price: $197.54
Out Of Stock.
  • Supports AMD RYZEN Series Processors and 7th Gen A-series/AthlonTM Processors for socket AM4
  • Supports DDR4-3200+(OC) Memory
  • Best virtual reality game experience without latency
  • Gaming LAN with LAN Protect
  • In-Game Weapons: Game Boost, GAMING Hotkey, X-Boost, Xsplit Gamecaster
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  • Key Selling Points

Key Selling Points

  • Supports AMD RYZEN Series Processors and 7th Gen A-series/AthlonTM Processors for socket AM4
  • Supports DDR4-3200+(OC) Memory
  • Best virtual reality game experience without latency
  • Gaming LAN with LAN Protect
  • In-Game Weapons: Game Boost, GAMING Hotkey, X-Boost, Xsplit Gamecaster
  • Description
  • Product Details
  • Customer Reviews
  • Q&A


Supporting any and all AMD AM4 processors, the MSI B350M Micro ATX Motherboard will give you rock solid reliability and useful features. Technologies like M.2, USB 3.1, USB Type-C, RAMDisk, and a gamer-oriented BIOS all make their way onto this board for your benefit. Msi Rosaries Amd Ryzen B350 DDR4 VR Ready HDMI USB 3 Micro-ATX Motherboard (B350M Mortar). The MSI B350M MORTAR motherboard supports AM4 processors and will fit in a standard Micro ATX case. This board is powered by the AMD B350 chipset and has support for 4 x 288-pin DIMM memory sticks with a max memory of up to 64GB. You can choose memory speeds of up to DDR4-1866 / 2133 / 2400 / 2666 / 2933 / 3200. This motherboard has 4 SATA ports and 1 x 10/100/1000 Mbps Ethernet built-in. Advanced features of the motherboard include: support for RAID, stylish Black / Red design.

  • AMD B350
  • Supports DDR4 memory


  • MSI B350M MORTAR AM4 AMD B350 SATA 6Gb/s USB 3.1 HDMI Micro ATX Motherboard
  • Driver Disk
  • Manual
  • SATA Cables
  • I/O Shield

Brand: MSI

MPN: B350M Mortar

UPC: 824142143711

Compatibility: AM4, Micro ATX

Packaging: Retail

Condition: New

Product Details

CPU Socket Type
Processor Type
Supports AMD RYZEN series processors and 7th Gen A-series / Athlon processors for Socket AM4
AMD B350
Number of Memory Slots
Memory Standard
DDR4 3200(OC)+/ 2933(OC)/ 2667(OC)/ 2400/ 2133/ 1866 *
* 7th Gen A-series / Athlon processors support a maximum of 2400 MHz.
Maximum Memory Supported
Channel Supported
Dual Channel
PCI Express 3.0 x16
1 x PCIe 3.0 x16 slot
- RYZEN series processors support x16 mode
- 7th Gen A-series / Athlon processors support x8 mode
PCI Express 2.0 x16
1 x PCIe 2.0 x16 slot (supports x4 mode)
PCI Express x1
2 x PCIe 2.0 x1 slots
SATA 6Gb/s
4 x SATA 6Gb/s
1 x M.2 slot (Key M)
- M2_1 slot supports PCIe 3.0 x4 (RYZEN series processor) or PCIe 3.0 x2 (7th Gen A-series / Athlon processors) and SATA 6Gb/s 2242/2260/2280 storage devices
Onboard Video Chipset
Onboard Graphics:
1 x DVI-D port, supports a maximum resolution of 1920x1200@60Hz*
1 x HDMI 1.4 port, supports a maximum resolution of 4096x2160@24Hz*
1 x DisplayPort, supports a maximum resolution of 4096x2160@60Hz*
* Maximum shared memory of 2048MB
Audio Chipset
Realtek ALC892
Audio Channels
7.1 Channels
LAN Chipset
Realtek 8111H
Max LAN Speed
1 x PS/2 keyboard/mouse port
1 x RJ45
USB 3.1
3 x USB 3.1 Gen1 Type-A ports
1 x USB 3.1 Gen1 Type-C port
USB 1.1/2.0
2 x USB 2.0 Type-A ports
1 x Optical
Audio Ports
5 x OFC audio jacks
Onboard USB
2 x USB 2.0 connectors (support additional 4 USB 2.0 ports)
2 x USB 3.1 Gen1 connectors (support additional 4 USB 3.1 Gen1 ports)
Other Connectors
1 x 4-pin CPU fan connector
3 x 4-pin system fan connectors
1 x RGB LED connector
1 x TPM module connector
1 x Front panel audio connector
2 x System panel connectors
1 x Chassis Intrusion connector
1 x Serial port connector
1 x Parallel port connector
1 x Clear CMOS jumper
Form Factor
Micro ATX
Dimensions (W x L)
9.6" x 9.6"
Power Pin
1 x 24-pin ATX 12V power connector
1 x 8-pin ATX 12V power connector
Supports DDR4-3200+(OC) Memory

DDR4 Boost: Give your DDR4 memory a performance boost

VR Ready: Best virtual reality game experience without latency

GAMING LEDs: Ambient LED lights for an awesome look & feel

Lightning Fast Game experience: Turbo M.2

Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience

GAMING LAN with LAN Protect: The best online gaming experience with lowest latency and bandwidth management

Military Class 4, Guard-Pro: Latest evolution in high quality components for best protection and efficiency

MULTI-GPU: With Steel Armor PCI-E slots. Supports AMD Crossfire

Mystic Light Sync: Synchronize other RGB solutions with your gaming rig and control all LEDs in one click

In-Game Weapons: Game Boost, GAMING Hotkey, X-Boost, Xsplit Gamecaster

EZ Debug LED: Easiest way to troubleshoot

Click BIOS 5: Award-winning BIOS with high resolution scalable font, favorites and search function

GAMING CERTIFIED: 24-hour on- and offline game and motherboard testing by eSports players

WHQL certified for Windows 10

Package Includes

Customer Reviews

Review Summary
43.33% (13)
16.67% (5)
20.0% (6)
3.33% (1)
16.67% (5)
By Nina Arnaud
Very nice build
There has been talk of memory problems with ryzen, but with this motherboard and the g.Skill flarex memory, i had no problem moving the clock speed for the memory to 3200 and the voltage to 1.35, which the memory and motherboard were rated for. I added a msi 1060 6gb graphics card and the system is rock solid. I haven't actually tried to overclock the cpu yet, but i have seen it go slightly over 4ghz, which is it's max burst speed for the ryzen 5 1600x. The games i have are smooth with everything cranked up at 1080p. I have no intention of adding another graphics card so the 500 watt evga power supply will be plenty. I used a cosair case that was inexpensive, but solid and works nice. I added another fan to the front and blocked off the spots on top for another fan. The cpu does not come with a cooler and a deepcool gammaxx 400 cpu cooler was added to the mix. I did not use the heat sink compound supplied, but some articcool i had. It is very quiet and runs cool too.I noticed someone else had problems and i wanted to add that i updated to bios to the latest version that supports the ryzen 5. Like i said, no problems and it's rock solid. The memory was a bit pricey, but i figured if it was made specifically to support the amd motherboards with the x370 and b350 it would minimize the chances of problems and it looks like it did. I am quite happy. :)one other thing, they mention in the manual and have an additional insert in the box that both state the memory should go in the second and fourth slots counting from the cpu out. The memory part number is f4-3200c14d-16gfx. I am seeing the cpu cores clocking as fast as 4.1 ghz which is fine for me, i plan on burning it all in for a few days and watch the temperatures, i didn't like the feel of the way the fan mounted, it required attaching one side and rocking the fan over the cpu and i am worried about what that did to the thermal paste. So far the highest temperature seen was 72 degrees c. I plan on using this for gaming and 3d modeling, so the extra cores will come in handy when i need it as a workhorse. I read the manual that came with the motherboard looking for references to memory voltage and the only thing i found was "based on the processor specification, the memory dimm voltage below 1.35 is suggested to protect the processor." base on that i reduced the memory voltage in the bios to 1.34 volts and it is still solid.
Ram clock setting troubles and lacking driver support for windows 7
Works great and runs smooth had trouble installing os after i couldn't get mouse/keyboard/usb devices to work in win 7 install but could be issue with hdd, ended up cloning a win 10 drive i had in laptop to get new build to work. Unfortunately even after updating to latest bios available on main website ram still won't clock past 2133mhz even though it is 3000mhz ram. Not sure when new bios worked for someone with same issue but not work for me. Sad day. But new build running all games ultra @60fps so not all bad guess i gotta wait for more bios updates to get the most out of ram without reboot loop and no post.
By Maria Johansen
B350m mortar + (cmk16gx4m2b3200c16w) ram + ryzen 1700 cpu
Update!!! Bios 7a37v14 is now available and now the ram is running at full speed!!! A-xmp profiles are working, benchmark'ed it, it is hella fast wow!Zen it is!I wanted to update my workstation pc from fx 8350 to ryzen 7 so far all is good.Nice looking motherboard looks well built, better looking than asus motherboards in the same category.Just be careful with the bios updates i found the best version for 1700 and this memory to be 7a37v12 even though the latest one is 7a37v13 on msi web site at the time of this writing. For some reason when i updated to the latest it locked my cpu frequency at 1.55ghz lol which made it exactly as fast as a fx8350 so i went back a version and all is good. I am not into overclocking but i have the game boost enabled which puts all cores at 3.4ghz all the time.For about $560 i have a new pc now.
By Suzanne Holland
Awesome bang for your buck
First time going amd, was suprised at how easy it was to fit everything in and the msi bios makes it super easy to overclock everything, had no problems with it besides the fact that the back plate for the cpu wasnt glued on, not sure why, but it was a quick fix.
By Terry Murphy
Amazing motherboard for the price
Amazing motherboard for the price. Bios have tons of options that i haven't seen on an matx board before. To be fair though i've only had full atx boards for the past 5 years.I'm using these to build a small cluster, i picked up 4 and the double pci-e slots allows me to install one gpu per cluster node while as well being able to install a second pci-e card for fast networking interconnect. Almost, done with my cluster build (waiting on more components).. Will update my review when i've got it fully built!
By Sebastian Christiansen
From a hardware standpoint, its a decent matx board ...
From a hardware standpoint, its a decent matx board. Headers and connectors are laid out well enough for decent cable management and the leds are decently bright. However, there aren't many usb ports on this board for reasons i'm not entirely sure of. Other boards don't seem to have this problem.Another issue is the uefi interface. The latest official release as of 6/27/17 was released on 5/3/17 despite agesa being officially released for ~2 weeks and other board manufactures having released official production uefi images with the latest agesa updates already. Now that said i was able to get a 32 gb (2x16) kit of corsair vengeance 3000mhz ram up to 2666 mhz with an "a-xmp" profile, but there's no iommu patch and memory can still be an issue so far. On top of that, should a uefi setting change fail (as it often can when messing with clock rates) you have to reset the board with a screwdriver across the "reset_cmos" headers because there isn't a jumper on the board.
By Ariana Jones
Five stars
Four stars
Was a chore to post, but after getting the ram config right and updating the bios, ran smooth.
By Tomislav Plate
Great board for my first ryzen build
Just built my ryzen system not too long ago, this msi motherboard has been solid. With the led boot up test lights to the red led ambient lights made me have to build a red and black theme lol. I do like the suite of msi software, though i don't have all of them installed. I only use the msi live update app and the gaming app. Those help me keep the motherboard software updated, control the led lights and put my cpu in silent mode or gaming mode. I have tried the oc mode in the gaming app but it doesn't seem like it is doing anything. So i'll stick to doing the overclocking myself.The only real set back that i faced was the initial memory compatibility for ryzen. I had to wait for the bios update that had the new agesa microcode. For a bit i could only hit 2667mhz on my g.Skill ripjaw v ddr4 3200 kit. As of right now i can run 3200mhz and has been running smooth. That's pretty much it, everything has been plug and play. No real headaches.The main reasons i decided on buying this board is to build a smaller computer and that has crossfire capability. B350 chipset doesn't natively support crossfire, but msi was nice enough to set up a version of it through a pci-e 2.0. I have yet to test it out, because of the current price craze of graphics cards. So i'll update this review when i get to that.One minor con or glitch, is the lack of bios download option through the live update app. I say glitch because the live update app can recognize your bios version, but i'm not sure if it was meant to download the newest bios or not. I understand there is a procedure to doing the flash. I think it would be nice if i can actually download the newest bios within the app, instead of having to go to the website ever so often to look for an update.The only real con, at the time of purchase, is the lack of selection of x370 chipset (with native crossfire) for matx form factor on all motherboard vendors. So, as i previously mentioned msi helped us out a bit. If i had to pay a bit more for it i would have and if wanted to build with a full atx board i would have waited for threadripper.
By Danielle Moore
All of the boards out there now (mid july 2017) seem to have some sort of trade off but in the end i am very happy with my purchase
Ryzen 1600x @4.0ghz 1.381v, 16gb gskill flare x @3200i heavily researched all of the matx options for ryzen before finally deciding on the mortar. All of the boards out there now (mid july 2017) seem to have some sort of trade off but in the end i am very happy with my purchase. I knew that i would be overclocking and after researching the other matx am4 boards it seems that the mortar has the best power configuration (actually has load line calibration unlike some others). I as well have more use for a usb c port than a vga port.After building my new ryzen 1600x system i booted up and immediately updated the bios with the most recent one from msi. After installing windows i started to dig in and see what kind of overclock i could get. Overclocking the memory was pleasantly painless which was a relief after hearing that this was an issue at ryzen's launch. It recognized my gskill flare x 3200 kit with 14 14 14 14 34 timings with no issues and has been running at 3200 trouble free.Now for the issues. I don't seem to be able to use the bios to overclock the processor. Every time i try it defaults to 2.2 ghz. Something here in the bios still needs to be tweaked. Luckily by setting the cpu stuff in the bios to auto and using amd's ryzen master software (which has some of its own issues) i was able to get a stable 4ghz across all cores at 1.381v. I haven't tried to go for 4.1 yet. I've tested with cinebench and by playing games and verified speeds by using cpu z. I'm using a corsair h115i aio in push pull and the cpu stays nice and cool all the time.The other minor issue i have is that i can't find anywhere in the bios to turn the leds off. I almost didn't buy this board because of the leds. I hate leds and rgb because i'm old, get off my lawn. Edit downloading the "msi gaming app" will allow you to disable the leds. Otherwise this software is useless.I've only put this system together in the last few days so only time will tell how things hold up. The biggest point to take away is that the newest bios allows quality memory to be clocked at the appropriate xmp profile at least up to 3200. 4 4 pin pwm fan headers is better than some competitors as well. I'm as well using a samsung 960 evo 250g for my os drive and that has as well been superfast and drama free with this board.


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