Pros: I love this board. It works great in my home server and has been reliable for several months of uptime now. The build in Female USB slot on the motherboard is great for people that want to run an OS/Hypervisor off a bootable USB stick. Supports 3TB HDD. IOMMU passthrough works great with ESXi. I have been able to pass through several PCIe nics, and a M1015 Serveraid card. Onboard Nics each came with their own PCIe channel. Bios is basic and easy to work with. The heat alarm and automatic shutdown function great. I mismounted my CPU cooler originally and was pleasantly surprised to hear the alarm go off. Its good to know that if something goes wrong in the future this will shutdown before serious damage occurs. I also love the range of available CPUs that work with this board. Newegg doesnt have a huge selection but the market is full of used C32 chips at very affordable prices.

Cons: Onboard RAID chip is software based RAID. It works fine if you are just putting something like Ubuntu on the machine, but ESXi will not recognize the array and will see each drive individually. Successfully passedthrough a PCI wireless NIC to different VM's. Although PCI passthrough worked, I wouldnt recommend it, and I stopped using it because the PCI slot shares a channel with the onboard VGA. Not a big deal for me though. I just put in a PCI ethernet nic and use that for my ESXi management interface. PCIe passthrough works great. Northbridge runs hot. I installed an aftermarket Enzotech NB cooler that I got on newegg and it works well. Some of the cheap heat tape on the stock cooler was stuck on the NB chip and wouldnt come off. I gently removed what I could and used some artic silver with the new piece and it works well.

Overall Review: I bought this board used from someone who was upgrading their equipment and am happy with my purchase. I would recommend this board for anyone looking at a budget priced server. I am running using a 4171 HE CPU, and 8GB of Unbuff ECC RAM. Currently running ESXi 5.1u1 with a pfsense VM as my router, and Ubuntu 12.04 Server running PLEX for my media. Side VM's for testing include a LAMP server with Joomla, and several desktop OS's. My lack of RAM prevents me from running as many VM's as I would like. All in all a great little box to serve my home needs, and test new stuff.

Pros: This compact mainboard's a high-quality piece. I've tried it with FreeBSD 9.0-R, Ubuntu 12.04 x86_64, and Windows XP x64 Edition so far. It works very well with all of these. I also had a number of technical questions for Supermicro, which they answered over e-mail, usually on the same day; their support's excellent.

Cons: The Supermicro Superdoctor application shows some of the temperatures (System, Air and NB) running kind of high--113F, 91F, and 122F, respectively. This despite that my configuration's very low-power (HE-class CPU, SSD disks, mild video board, etc). This gives me the impression that the board's running a little warm, but maybe this isn't a concern at all. On the upside, I ran a few hours of load tests and didn't see the temperatures go up at all.

Pros: Forget about the Dynatron F558 cooler I mentioned in my earlier review. Yes, it works just fine, but it's a bit noisy, at least for home use. I recently discovered the Noctua NH-U12DO A3 cooler which is head and shoulders better than the Dynatron. Yes, it's spendy at about $69, but it is whisper quiet, nearly silent, and it cools amazingly well! I'm seeing 34 C under 100% load. With the Dynatron, 100% load gave about 56 C. A huge difference!

Cons: The NH-U12DO A3 was not available here on new egg, I found it at another online retailer. Also it's a very large cooler, huge even.

Overall Review: The NH-U12DO A3 can mount in any orientation, and it includes brackets for all Socket F, C32, and G34 boards, both 3.5" and 4.1" bolt spacing. Also it includes two of Noctua's very nice 120 mm fans, and a tube of thermal grease.

Pros: Great board --> just have to bring attention to the con I ran into.

Cons: Look at the 8-pin CPU power connector. Notice that cap directly beneath it? Now go look at your PSU of choice and take note of the clip size on the 8-pin cable. I have several $$$ PSU's from Corsair (AX, RM and TX Series) that won't work due to that cap and having looked at a range of other Power Supplies here there appears to be compatibility issues with several other PSU's unless you are willing to get out an XACTO knife on your cable...

Overall Review: At home I have a handful of ECS FM2 boards that have a cap in the same spot --> ECS flipped the 8-pin CPU power connector 180 degrees thus no problem.

Pros: cost and size

Cons: n/a

Overall Review: Worked great right out of the box. My second Supermicro board and I haven't had any issues with either. It came with wrong I/O clip, but they RMA me a new one pretty fast.

Pros: Great motherboard, it's stable running VMware vSphere 4.1 with 2 active Linux guest OSes (32- ad 64-bit), FreeBSD and Windows Server 2003. Memory used is 1 pair of Newegg part number N82E16820139271, Opteron 4180 running the show on a single 160GB HD.

Cons: When I first installed the motherboard, it worked great the first day. Used an older ATX power supply with this setup. I shut it down and turned it on a few days later and the computer would not POST. I ended up sending it to California for RMA and it turned out the BIOS had lost its programming. One reflashed BIOS and new Antec power supply later and the system has been stable for 2 months straight running 24/7.

Overall Review: This motherboard supports 4/6/8 core Opteron 4000-series processors and is great for a home lab setup or for production use, in my opinion.

Pros: 64 GB memory, 6 SATA drive support, several PCI and PCI Express slots. Sounds like a great board. Bought as part of a combo from NewEgg, so it was a decent price.

Cons: First, it only sees 2 of the 4 memory slots. I have 4 - 2GB DDR3 SDRAM DDR3 1333 (PC3 10600) ECC Registered Server Memory and it only sees 2 of the sticks. Video has stopped working (you can remote desktop to the server and see it is running fine) requiring a complete shutdown to reset the video chipset. Only supports RAID 0/1/10 - you will need to buy an add-in card to use RAID 5 (so much for the 6 drive support).

Overall Review: I've built dozens of desktops (34 systems in the past 2 years with all hardware bought from NewEgg), this is my first server. I purchased an AMD Opteron 4122 Lisbon 2.2GHz Socket C32 for this server. Didn't notice it did not include a cooling device. Came back to NewEgg to buy one and they don't carry one. Had to go to another website to find one that would work with the C32 socket.

Pros: A solid motherboard. Good featureset, stable, solid, plenty of SATA cables in-box. Once set up, has been rock solid as the backbone server of our organization.

Cons: Configuring RAID for a Windows Small Business Server 2011 was a bit of a pain. The Driver Disk included only had a RAID driver installer app that worked with a floppy drive. Who uses floppy drives?!? Finally got RAID working for OS Install by copying files off Driver CD and onto a USB Key. Also, if RAID was enabled and the DVD Drive was not in SATA Port 4, the DVD would not be recognized by the BIOS. Documentation was thin. No Manual included, had to download and print.

Overall Review: There are adapters in the board for either a Socket AM2/3 Clip-Down-Style CPU Fan, or a 3.5" Screw-Down Socket F CPU Fan. Ensure that you get one of these, as most Socket C32 Opterons don't come with CPU fans in-box.