Pros: None, that could be determined.

Cons: By all accounts, board was D.O.A.; wouldn't even power up. Power supply and 4GB memory stick [listed by ASRock as supported] both checked and verified as good. Tried every possible iteration of booting including those suggested by tech support [more on that to follow] and still NOTHING. Too add to frustration, this was a replacement board of another ASRock product [D1800M] that behaved in the EXACT same manner. So, my bad for giving ASRock a second chance. It won't happen again.

Other Thoughts: I'm glad others have been satisfied with this and other ASRock mobos but that wasn't the case here; consequently no positive recommendations will be forthcoming. I'm also disappointed with tech support response. While Newegg issued an RMA swiftly and w/o hassle I was only told to contact ASRock for further assistance. Auto email response from them was to contact seller for tech support. Beyond that, nada. ASRock phone support merely went thru shopping list of "try this, try that, oh well, it's defective, send it back" and offered nothing beyond that.
[This gets 1 egg only because I can't submit it with 0]

Manufacturer Response:

Dear Valued ASRock Customer,

Sorry to hear the second mainboard still having power on issue.
Please trouble shoot the mainboard whether the power issue is resolved.
• Unplug the ATX power, remove all components from mainboard.
• Remove the mainboard from chassis, place it on mainboard’s box.
• Clear the CMOS.
• Reseat video card firmly and 6+6 PCIE power (if applied).
• Plug the 24 pins ATX power.
• Connect the chassis power switch to mainboard (refers to system panel layout).
• Turn the power on to check if it’s get the power.
• Populate the components one by one to test for screen POST if it gets the power.


If you have any technical support inquiry, please contact us at http://www.ASRock.com/Support/tsd.asp
We will assist you shortly.

Thank you

ASRock Support
Tech Support Email: http://www.ASRock.com/Support/tsd.asp

Pros: Easy to install
Very small
Love the look

Cons: This is a four star for me only because i thought it was USB 3.0 compatible!

Pros: I bought both the BIOSTAR J1900MH2 and the ASRock Q1900M boards to use as a home router and a home NAS server. I'm very happy with the j1900 in these tasks. The boards were dirt cheap, have great expansion options (16G RAM, 3 PCIe slots, and USB3!), and use little power.

Cons: This Biostar board has a few less ports than the Asrock model (DVI and both internal and external USB port differences). This wasn't a big deal to me, however I also found that the Biostar board does not seem to support SATA hotswap on the internal SATA ports, while the Asrock did it just fine. So, if you care about SATA hotswap, go with this Asrock even though it tends to be a few dollars more.

Other Thoughts: Add in a cheap gig NIC and you have a low power router that blows away a Soekris in performance and is cheaper. Normal DDR3 RAM and PCIe slots make it easy to reuse leftover hardware you might have lying around.

Put 3 cheap 4-port SATA cards into one of these and you have a monster home NAS server with 14 SATA ports plus USB3 for even more ... for crazy cheap.

Pros: I needed a low power machine to run my pfSense firewall and this board does the trick. I think I was running around 40 watts (almost half used by the hard drive ) vs the 170+ watts with my old AMD board. The built in network is compatible with my pfSense 2.2+

Cons: Stopped working after 5 months but I feel it was due to my old power supply. Buying a new board now with a power supply I didn't pull from my old computer parts heap in the corner of my basement.

Pros: Silent and cool operation from a quad core.
Low price for motherboard/processor combo.
PCI-Express capabilities.
Dual-Channel Ram.
Low-power consumption.

Cons: PCI-Express 16x slot is 2.0 and really 1x.
Only 2 Sata ports.
Ram surrounds CPU cooler, cutting some airflow to it.

Other Thoughts: So really, I wanted to do this review to see if this board would be worth having a video card in it for gaming. I did 3D mark with the onboard Intel HD graphics and one with an AMD 7750 (no external power and low profile). The power consumption went from ~30w to ~70w peak during this test in my rig.

Test - Onboard Score - +7750 score
Firestrike 1.1 - 171 - 1905
Skydiver 1.0 - 600 - 5610
Cloudgate 1.1 - 1604 - 5709
Ice Storm 1.2 - 18985 - 37482

The physics score was rather uneffected, but the graphics scores went up considerably. Skydiver went from a slideshow to a near-smooth experience. Firestrike, however, was still pretty rough. Reglardless, even with only 1x operation, it seems a video card is worth it if you want to attempt to game from the awesome little J1900, as it struggles with video performance.

I'm using a Silverstone ML04 (with 4x Enermax Enobal fans turned down), older Sandisk SSD, Older OCZ Power Supply, Pioneer Blu-ray player, and some cheap Nanya 667mhz ram I had laying around. Idle takes less than 20 watts and, outside of the power supply fan, it's dead silent. Going to use this for a HTPC, but figured I'd experiment as a gaming computer as I've used the J1900 in the Gigabyte Brix for Steam Streaming. Saw the J1900 in that was getting bottle-necked by the processors poor video performance in local gaming, so figured it was worth a quick test on this board to see how well a vid card would help. Won't be keeping the video card in this box as the J1900 can stream just fine, but hopefully this little review helps somebody.

Pros: 10w processor.
Micro Atx with plenty of expansion options.
Takes standard DDR3 sized memory (not compact laptop).
Plays 1080 and 720 very smoothly.
Very quick boot.
Takes +2tb drives out of the box.
Nice UEFI.

Cons: Only 2 Sata ports, but plenty of expansion bays for other options.

Other Thoughts: Currently using as Media server/htpc and crunching with Boinc. Never bogs down and stays around the 25-30w range.
Paired with 1600 DDR3 ripjaw memory and a WD 6TB drive with a 128gig ocz SSD for boot.
Use onboard graphics and do not see a need to upgrade it since the processor would bottle neck higher end GPUs.
It is amazing that this is like 4 pentium 4 chips crammed into one 10w package. Great for everyday computing needs and even Green crunching.

Pros: pfSense v2.2.1 64bit (amd64) Bios 1.50
pfBlockerNG (120600 Deny Rules)
Snort IPS
StarTech ST10000SPEXD3 Dual GiG Ethernet PCIe card (this enables one each LAN, WAN and DMZ VLANs).
8gb of GSkill F3-1333C9S-4GIS RAM.
120gb Kingston SSD.
Cooler Master Silencio 352 case (added lower 120cm fan to front and removed internal 3 1/2 drive bay). Ability to clean the filters is a plus.
Corsair CX430M power supply.
Very Fast low cost stateful firewall/VPN.
Intel(R) Celeron(R) CPU J1900 @ 1.99GHz
Current: 1992 MHz, Max: 1993 MHz
4 CPUs: 1 package(s) x 4 core(s).
Moved from a standard SATA to the SSD and really see the speed increase. With 8gb RAM rarely touches disk.
So far it looks real good and am happy with the ROI.
Time will tell on duration.

Cons: The Asrock RAM long DIMM slots slightly block the airflow over the passive CPU cooling fins. Temp indicator shows a constant 26.8C (about 80F). The Silencio case with extra front 120cm fan may mitigate any blockage.
The Asrock Q1900M would not fit into a Cooler Master elite 130 stackable case since it is a Micro ATX board. Had to move to a larger enclosure.

Other Thoughts: Unknown power reduction benefits of the embedded Quad CPU

Pros: Low Power 15W measured at wall not bad.
Quad core.
Fanless.
Runs very Cool 35C was max temperature under full load.
For Linux users make sure you run latest kernel/Mesa for best support (3.19.3 as of writing)
Fast shipping great job to newegg as always.
Dual Channel Memory support (Standard Dimm)
Excellent quality components.
Low Cost Build.

Cons: Attached a 530 series Intel SSD. It would recognize SSD then drop out when in UEFI mode. I upgraded uefi bios to 1.50 and problem still persisted. I installed another new 530 SSD and same problem. Swapped Sata cables to rule them out and did not fix. Both SSD's were brand new. I installed a new regular drive and all went well. . ASRock should investigate this, as this killed my ultra quiet server plans. -1 Egg

Other Thoughts: SSD's were verified good when installed into another motherboard (ASUS Mark 1). Was hoping to utilize SSD for a low power fast fileserver. Other than that all went well. For a Bay Trail platform this system actually runs great, and the price was cheap. Too bad this board didn't support ECC but that was expected for the platform. Runs Windows 8.1 and Manjaro Linux pretty well. Was a little disappointed over the SSD issue.

Pros: Very low power consumption.
Considerably powerful CPU given such little power.
Completely silent.
Cheap!
UEFI BIOS.

Cons: No SATA III.
Doesn't double as a personal heater.

Other Thoughts: Perfect for a low resource home server!

Pros: Nothing

Cons: Appeared the box was opened before, placed it into a working setup and nothing. The board gets warm indicating its fried. Should have better quality control. Was going to do a RMA, but $12.00 just to ship back, I can purchase the ADH warranty for $7.00, which includes shipping. I wonder whats better. I shouldn't have to pay for poor product control.

Manufacturer Response:

Dear Valued ASRock Customer

We sincerely apologize for any inconvenience this may have caused you.
Please trouble shoot the mainboard to check if its resloved.
Unplug the ATX power, remove all components from mainboard.
Remove the mainboard from chassis, place it on mainboard’s box.
Clear the CMOS.
Test with single memory module on A1 slot.
Test with onboard video.
Plug the 24 pins ATX power.
Connect the chassis power switch to mainboard, and try again.
If you have any technical support inquiry, please contact us at http://www.ASRock.com/support/tsd.asp. We will assist you shortly.

Thank you

ASRock SUPPORT
Tech Support Email: http://www.ASRock.com/support/tsd.asp