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Item#: N82E16813182260

SUPERMICRO MBD-X9DAi-O Extended ATX Server Motherboard Dual LGA 2011 DDR3 1866/1600/1333/1066/800

  • Dual LGA 2011
  • Intel C602 Chipset
  • 16 x 240pin

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

SUPERMICRO MBD-X9DAi-O Extended ATX Server Motherboard


  • Dual socket R (LGA 2011) supports Intel® Xeon® processor E5-2600 and E5-2600 v2 family†
  • Intel® C602 chipset; QPI up to 8.0GT/s
  • Up to 1TB ECC DDR3, up to 1866MHz; 16x DIMM slots
  • Expansion slots: 3x PCI-E 3.0 x16, 2x PCI-E 3.0 x8 & 1x PCI-E 3.0 x4 (in x8)
  • Intel® i350 Dual port GbE LAN
  • 8x SATA2 and 2x SATA3 ports
  • 4x USB 3.0 and 7x USB 2.0 ports


Product SKUs
MBD-X9DAi -O X9DAi (Standard Retail Pack)
MBD-X9DAi -B X9DAi (Bulk Pack)
Physical Stats
Form Factor E-ATX
Dimensions 12" x 13" (30.5cm x 33.2cm)
  • Intel® Xeon® processor E5-2600 and E5-2600 v2 family† (up to 150W TDP **)
  • Dual Socket R (LGA 2011)
Cache Up to 30MB
System Bus QPI up to 8 GT/s
Note † BIOS version 3.0 or above is required
Note ** Motherboard supports this maximum TDP. Please verify your system can thermally support
System Memory
Memory Capacity
  • 16x 240-pin DDR3 DIMM slots
  • Up to 512GB DDR3 ECC RDIMM
  • Up to 128GB DDR3 ECC/non-ECC UDIMM
Memory Type
  • 1866/1600/1333/1066/800MHz* ECC DDR3 SDRAM 72-bit, 240-pin gold-plated DIMMs
  • Support ECC and non-ECC UDIMMs
  • * Maximum memory speed may be capped by CPU. Please verify that the chosen CPU can support desired memory speed.
DIMM Sizes 32GB, 16GB, 8GB, 4GB, 2GB, 1GB, 64GB LRDIMM
Memory Voltage 1.5 V, 1.35 V
Error Detection
  • Corrects single-bit errors
  • Detects double-bit errors (using ECC memory)
On-Board Devices
Chipset Intel® C602 chipset
  • SATA 2.0 3Gbps with RAID 0, 1, 5, 10
  • SATA 3.0 6Gbps with RAID 0, 1, 5, 10
SCU SATA SATA 2.0 3Gbps with RAID 0, 1, 5, 10
Network Controllers
  • Intel® i350 Dual Port Gigabit Ethernet
  • Virtual Machine Device Queues reduce I/O overhead
  • Supports 10BASE-T, 100BASE-TX, and 1000BASE-T, RJ45 output
Audio RealTek ALC889 7.1 High Definition Audio with S/PDIF header
Input / Output
  • 2x SATA 3.0 ports (6Gbps)
  • 4x SATA 2.0 ports (3Gbps)
SCU SATA 4x SATA 2.0 ports (3Gbps)
LAN 2 RJ45 Gigabit Ethernet LAN ports
  • 4 USB 3.0 ports (Renesas uPD720200A; 2 rear + 2 via header)
  • 7 USB 2.0 ports (4 rear + 2 via header + 1 Type A)
Audio 7.1 HD Audio with optical S/PDIF
Keyboard/Mouse PS/2 Keyboard Combo port
Serial Port / Header 1 Fast UART 16550 port
IEEE 1394a 2 Headers
DOM 1 DOM (Disk on Module) power connector
TPM 1 TPM 1.2 20-pin Header
Expansion Slots
  • 3x PCI-E 3.0 x16 slots
  • 2x PCI-E 3.0 x8 slots
  • 1x PCI-E 3.0 x4 (in x8) slot
  • (Both CPUs need to be installed for full access to PCI-E slots and onboard controllers. See manual block diagram for details.)
System BIOS
BIOS Type 128Mb SPI Flash EEPROM with AMI BIOS
BIOS Features
  • Plug and Play (PnP)
  • APM 1.2
  • DMI 2.3
  • PCI 2.3
  • ACPI 1.0 / 2.0 / 3.0 / 4.0
  • USB Keyboard support
  • SMBIOS 2.7.1
  • UEFI 2.3.1
  • SuperDoctor® III
  • Watch Dog
  • NMI
Power Configurations
  • ACPI / ACPM Power Management
  • Main Switch Override Mechanism
  • CPU Fan auto-off in sleep mode
  • Power-on mode for AC power recovery
  • Suspend to RAM (STR)
PC Health Monitoring
  • Monitors for CPU Cores, +1.1V, +1.5V, +3.3V, +5V, +12V, +3.3V Standby, +5V Standby, VBAT, Memory Voltages.
  • 6+1 Phase-switching voltage regulator
  • 8x 4-pin fan headers (up to 8 fans)
  • 8x fans with tachometer monitoring
  • Status monitor for speed control
  • Status monitor for on/off control
  • Low noise fan speed control
  • Pulse Width Modulated (PWM) fan connectors
  • Monitoring for CPU and chassis environment
  • CPU thermal trip support
  • Thermal Control for 8x Fan Connectors
  • I2C temperature sensing logic
  • Thermal Monitor 2 (TM2) support
  • PECI
LED CPU / System Overheat LED
Other Features
  • Chassis intrusion detection
  • Chassis intrusion header
  • SDDC Support
  • RoHS

Whats in the Box


Learn more about the SuperMicro MBD-X9DAi-O

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the SuperMicro MBD-X9DAi-O

Do you own this product? Write a Review

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  • Steve J.
  • 3/23/2015 5:47:59 PM
  • Ownership: more than 1 year

2 out of 5 eggsWon't boot after 2 years

Pros: Great board when it works.

Cons: After 2 years, board hangs on first bios splash screen. Contacted Supermicro tech support, they won't get back to me. Board is out of warranty after 1 year.

Other Thoughts: Will be looking for a replacement board. Probably Tyan S7050AZNRF

Did you find this review helpful? Yes No

  • Jerritte C.
  • 2/20/2014 9:09:55 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsSolid board, thus far

Pros: The board has a rich feature set and supports a wide array of components. It seems to be very well built, as well.

I found the BIOS quite simple to work with, so I'm not sure what difficulties the one previous reviewer was referring to regarding that.

I had absolutely no problems whatsoever setting up a RAID 1 array for my main system drives. Actually, it may have been the easiest set up I've ever done.

Cons: I'm going to list several "cons" here, but I'm being pretty picky on some of them.

First, as others have said, this is NOT a standard eATX board. I put this in a Corsair Obsidian 750D case, which is eATX compatible. However, of the 10 holes in the board, only FIVE of them lined up correctly with the eATX holes (no, I'm not joking). As another reviewer stated, I too had to drill and tap holes in the case to get it to mount correctly (he said he only needed to drill/tap four...not sure why I had to do five, but I did -- maybe he forgot one :). This wasn't a huge deal for me, because I read the reviews beforehand and was aware that I might have to do this; but I think it's ridiculous that they say it's an eATX board, when it's a non-standard variety.

Second, I'm running Windows Server 2012 Standard on it, and I can't get the 4 additional SAS/SATA ports to work. I still need to look into this more, but just wanted to state that it isn't something that works right out of the box (at least not for me).

Third, I wish they put more SATA III ports on it (why only 2?).

Fourth (being picky, here), getting into the BIOS at first was a huge pain, because I the screen that shows what button to push basically just flashes for a split second. I know it's generally going to be ESC, F2, or Delete (which is what it is -- Delete), but I just wish that screen would stay put for maybe 4-5 seconds so you could actually read it. :)

Other Thoughts: I haven't had the board very long, so I can't speak to its stability, longevity, etc. But thus far, I'm pleased with it, overall.

Did you find this review helpful? Yes No

  • Anonymous
  • 2/3/2014 9:59:28 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsgreat board

Pros: My board was flawless, it's a decent board. I'm sure many others have mentioned this, but to find out what it's compatible with just head to the supermicro web site pretty easy after that.

Cons: None

Other Thoughts: Kinda bummed lga 2011-3 is suppose to come out soon. The thing I dislike about these builds is the price on the higher end xeons, but you get want you pay for.

1 out of 1 people found this review helpful. Did you? Yes No

  • deyan p.
  • 3/10/2013 2:57:30 PM
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggs

Pros: im here to ask question , I stumble upon a PSU problem, I need 24-pin and two 8-pin power connec-tors.Which manuracturer had that

Cons: none since haven't put it to work

0 out of 8 people found this review helpful. Did you? Yes No

  • MENG W.
  • 2/28/2013 12:50:52 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsNice board, all working.

Pros: Bought them in bulk, all working smoothly. one ram slot is not working in one board I received, but changing my ram to another slot makes it work. This board has everything I need for a server machine.

Cons: single DOA ram slot is my only disappointment. But i am satisfied with this low failure rate.

Did you find this review helpful? Yes No

  • karen s.
  • 10/18/2012 4:14:52 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsFaulty

Pros: I'm sure there would have been plenty if the board would have worked.

Cons: Motherboard was basically faulty and when testing the setup on my workbench, with the power-button cable from the case properly connected, I found that the motherboard would turn on automatically once: (i) the 20+4 pin and two 4+4 pin 12V connectors were attached to the motherboard, (ii) the PSU switch was flipped to on, and (iii) without pressing the case's power button. Further, all of the other components, except the GPU/GPU fan, e.g., the HDDs, the optical drive, the CPU fans, and the PSU fan, would also start up with the motherboard, which is, suffice to say, very odd behavior.

Also, it would have been nice to have had dual, on-board USB 3.0 connectors for the front panel.

Other Thoughts: For those who are interested, in an attempt to see if, perhaps, some of the components were faulty, I placed the GPU (an NVIDIA GeForce GTX 680) in an ATX-based system and found that it worked perfectly. Further, I verified that the PSU (COOLER MASTER Silent Pro Gold Series RSA00-80GAD3-US 1000W ATX 12V v2.3/EPS 12V v2.92) worked on two different ATX-based systems.

Since these two tests demonstrated that the GPU and PSU were seemingly fine, I set about trying to diagnose if the motherboard was at fault. To this end, I ran the following tests, all of which led to the same behavior, i.e., the motherboard would turn on by itself and (where appropriate) without powering the GPU fan/GPU:
- Removed the case's power-on cable
- Ensured that the motherboard was properly grounded with nothing, save for the riser studs in the appropriate places, touching the underside
- Removed the I/O shield
- Put the motherboard in the case and attached the I/O shield
- Disconnected all drives
- Inserted, one at a time, an NVIDIA GeForce GTX 690, 580, and 280, all of which are known to work, into the various PCIe x16 slots
- Removed the GPU entirely
- Removed and reseated the RAM (16x Kingston 16GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 Server Memory DR x4 1.5V)
- Removed CPU2 (an Intel Xeon E5-2687W) and left 8 sticks of RAM for CPU1, all of which were in valid slots, according to the motherboard manual
- Removed CPU2 and left 1 stick of RAM for CPU1 (also an Intel Xeon E5-2687W), which was in a valid slot, according to the motherboard manual
- Removed CPU2 and replaced CPU1 with a spare Intel Xeon E5-2630; further, I swapped out the DDR3 1600 stick for one stick of Kingston 16GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1333 Server Memory DR x4 1.35V
- Left the Intel Xeon E5-2630 in place and removed the RAM entirely, which did not produce any beep codes
- Removed the battery and reset the board, according to the motherboard manual

Since the penultimate step, i.e., removing the RAM entirely, did not produce any beep codes, according to the manual, the motherboard was flawed.

1 out of 4 people found this review helpful. Did you? Yes No

  • Matthew S.
  • 10/14/2012 9:48:02 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsDOA

Pros: Everything fits on this board. The x16 Slots are positioned so that you can get basically any graphics card on the market into them.

Cons: Motherboard was DOA. Power supply was checked out good, as was the front panel switch, cable, and connection to the board (verified with the manual and a multi-meter). But the computer won't turn on. Because of that, I'm going to mark this board as 3 Eggs for now, I want to see how a working board will run in my setup (2x 4 core Xenons, 32 GB DDR3 RAM graphics workstation), before I re-review it after getting a working board.

Additionally, there's only one USB 2.0 riser on the board, the other one is an internal USB 2.0 jack, which makes more than two USB 2.0 connections to the board impossible for cases with more than one set (or an internal card reader, for instance).

Other Thoughts: Having gotten to the point of having fully built the computer before attempting to turn the stupid thing on, I was reminded that a motherboard will still turn on with no damage to any components without a processor or RAM... having done that would have saved me a couple of hours of squeezing the board (it's huge) into the case and then getting everything installed and connected, oh, and wasting a tube of thermal paste on the processors and heatsinks which had to be removed to RMA the board.

2 out of 2 people found this review helpful. Did you? Yes No

  • Jeffrey B.
  • 8/26/2012 8:38:14 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsAlmost, but not quite...

Pros: It has good features at the price-point.

Cons: 1. They do not correctly advertise the specifications. This is NOT and EATX motherboard. it is a *variation* of EATX. The mounting holes do not line up with any other chassis... besides their own. Tthis is a "EATX revision 'm' " product -- It only works in their own chassis, that happens to cost 3x the price!

2. Whoever approved the BIOS should be fired. Immediately. It is a royal pain to set up, and simple things like boot drive selection wind up taking far, far too long.

Other Thoughts: This motherboard right here is a good reason for me not to trust Supermicro anymore.

2 out of 3 people found this review helpful. Did you? Yes No

  • Aaron K.
  • 5/23/2012 9:51:56 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Board, Non-Standard Mounting

Pros: Top-notch build quality and components. Very well thought-out. Oodles of management options for use in an enterprise environment. Connectivity options are pretty good too, with all the essentials you would want in a beefy workstation. Super fast! Love this platform. Using it for video post-production and visual effects, working with 4K RED footage.

Cons: Beware! Mounting hole pattern is listed as EATX on NewEgg and SuperMicro's website. But, it is not what you would expect for what's usually called EATX! I put this into a Corsair 800D case (awesome, btw) and I had to drill and tap four holes to get it to fit. Not a big deal for me but it could be a nasty surprise to someone.

Other Thoughts: I put DDR3-1600 ram into the board, but I can't get it to run full-speed (I did it correctly according to the memory population rules - read them, they are complex). It may be the fault of the DIMMs, as they report a number of options to the bord, but I setting the board to force 1600 doesn't stick. Perhaps a BIOS update will fix this. Intel storage drivers for installing windows are jinky! Highly recommend ignore the on-board RAID, put it into AHCI mode, and go get the Intel RSTe (Rapid Storage Tech Enterprise) drivers, not the normal RST ones. I had all kinds of stability issues until I figured that out. But now it's rock-solid and silly fast, and totally worth the headaches during the build (which honestly are to be expected for a generation of technology that's only months old)

10 out of 10 people found this review helpful. Did you? Yes No

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Item#: N82E16813182260
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