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ROG Maximus XI Hero Z390 Gaming Motherboard


I am quite pleased with my new ASUS Maximus XI Hero motherboard. I highly recommend it. ROG Maximus XI Hero

The ASUS Maximus XI Hero has an 1151 CPU socket and is built with the Z390 chipset. It supports multiple GPUs for SLI/Crossfire video operation. It has 6 GB/s SATA ports and USB 3.1 (gen 1 and gen 2). The motherboard has a socket for a TPM module for Windows BitLocker. ROG Maximus XI Hero

Back Input/Output (I/O) Ports on back of Motherboard: HDMI port; Display Port; LAN (RJ45); two USB 3.1 gen 1; three USB 3.1 gen 2; one USB 3.1 type C; two USB 2.0; Optical S/PDIF out; audio jacks; Clear CMOS button; Wi-Fi antenna connections.

Check the ASUS product page for this motherboard: you can find the “User Manual,” documentation, explanations, and the latest device drivers. The ASUS forums may also be of help to you. ROG Maximus XI Hero

Asus Motherboard

Asus Motherboard

This is the third computer I have built with an ASUS motherboard. The ASUS Maximus XI product line comes (or will come someday?) in several versions: Hero, Code, Formula, and Extreme. I bought the Hero because it was the only one available. I would have preferred a Formula; but, alas, no one had them in-stock. (I have an older version of the Formula in another computer; it is a great board.) So far, the Hero seems to meet all of my needs. ROG Maximus XI Hero

Honestly, I did not want to build a new computer. Assembling a computer from parts is more expensive than buying a ready-built machine; but I keep building my own computers simply because computer manufacturers are not building machines with the features or with the quality that I want. Luckily, building a computer is very easy these days (in 2018). For tools, all you need is one Philips-head screwdriver and scissors (or a pocket knife) to open packages.

Build Computer with ROG Maximus XI Hero motherboard

Build Computer with ROG Maximus XI Hero motherboard

I built my new computer with the ASUS Maximus XI Hero motherboard in a Corsair 330R case with an Intel i7 8700K (overclocking) processor, 16 GB of Corsair DDR4 memory, and a Corsair AX860 power supply. Connecting cards, components, and cables to the ASUS Formula motherboard can be very, very easy, if you have selected an appropriate case (which I did not). The motherboard is extremely well-labeled and the “User Guide” has excellent illustrations (and is available from ASUS as a download).

Speaking of cases: DO NOT use the Corsair 330R or similar case for a gaming computer. The case is too small. The “Specifications” for the case on the Corsair website specifically list the Corsair H100i CPU cooler as being compatible with this case, but it is NOT. Computer full formWith the H100i installed there was insufficient clearances between the cooler and: (1) the CPU power cables; (2) the rear exhaust fan; (3) the top optical drive bay; and (4) the CPU_FAN connectors. Make sure you get a case that provides sufficient room so parts are easy to install and so they will not interfere with each other.

Before starting, learn about how to avoid static charge while you are handling the motherboard, CPU, RAM, video card(s), and any component with electronics. I use an anti-static wristband, but I have also been known to simply ground myself prior to handling components. Always handle electronics by the edges only.

Motherboard Socket

Placing the CPU in the motherboard’s 1151 socket is very easy; but you should watch some YouTube videos if you have never done it before. Cable connections are obvious and easy to make. Connections include: 24-pin power supply cable; 8-pin and 4-pin CPU power supply cables; front-panel audio cable; front panel SATA 3.1 cable; front-panel switches and lights cables; CPU cooler (H100i) power cable; SATA data cables for 1 SSD and DVD. I like the included “Q-Connector,” which made it much easier to connect the front-panel cables to the motherboard; however, I wish the Q-Connector locked in place.


It is possible to install the CPU power incorrectly. In the past, this seemed to be impossible due to “keying” of the motherboard and power cable connectors. However, it may be possible to install the power connections backwards; so carefully verify the orientation of connectors.

Instruction manuals for all your computer’s parts and pieces are available online and many helpful souls have posted “How-To” videos on YouTube.

I strongly suggest that you download the pdf version of the “User Guide.” Reading the pdf “User Guide” on another computer allows you to make the text and illustrations as big as need (instead of trying to read the relatively tiny “User Guide.” If you do not feel like reading it, then look at the great illustrations of all the parts, pieces, connectors, indications, and controls (in this case, a picture is indeed worth a thousand words). At least look at Section 1.1.2. I had the “User Guide” up on another computer as I built this one.

You really should read the section of the “User Guide” addressing motherboard installation. I am sure that a lot of the complaints and problems people speak about resulted from their own failure to follow the “User Guide.” I also wonder if some problems might be due to failure to load the correct drivers for the chip set, LAN, audio, video, etc. And definitely read the section of the “User Guide” on avoiding damaging electronics with static electricity! ROG Maximus XI Hero

ASUS Maximus XI Hero Motherboard design

The ASUS Maximus XI Hero motherboard is designed for gamers (it is, after all, part of the ASUS “Republic of Gamers” line of products). If you are not building a computer for gaming or for other demanding applications, then you should probably select a cheaper motherboard. If you are only going to check your mail, surf the web, and use Microsoft Office programs, then this motherboard is overkill: you would be much better off buying an inexpensive, ready-built laptop or Surface Pro. I have a Surface Pro connected to a monitor, keyboard, and mouse via a KVM switch and it can do practically everything, except run some demanding work software or games. ROG Maximus XI Hero

On Board Graphic

The on-board graphics (HDMI and Display Port) and on-board audio are outstanding. Of course, the intended customer of this motherboard will undoubtedly want to install a high-end video card (maybe even two high-end video cards in SLI/CrossFire). I installed the EVGA GeForce GTX 1080 FTW 2 video card. The Hero’s on-board audio is great. ROG Maximus XI Hero

This motherboard supports both 8th and 9th generation Intel CPUs. I installed an Intel i7-8700K (8th gen) CPU. The “K” means it can be overclocked. It would be pointless to buy this motherboard without also getting an unlocked, over-clocking CPU. I wanted to install an Intel i7-9700K (9th gen) CPU, but I could not find one in-stock.

The ASUS Maximus XI Hero comes with the motherboard drivers loaded on a disc. These drivers will get your new machine up and running; however, they may not be the latest drivers. Therefore, I recommend that you download the LATEST drivers (from the ASUS webpage) to a flash drive. That way, you will have the latest drivers available, even without a LAN connection or a working DVD player. At least copy the LAN or wireless drivers; that way, you will be able to access the Internet to get the rest of the drivers. ROG Maximus XI Hero

I really like the BIOS (UEFI) interface for this motherboard; it is very easy to understand and to use. The “User Guide” contains good explanations for using the BIOS program, including the three methods to update BIOS.

Power Requirements:

The “User Manual” specifies an ATX power supply. Required power supply capacity (watts) will depend on the CPU and video card(s) that you are using. For example, many high-end video cards specify you need at least a 500 watts power supply (just for the computer with one video card). To maximize energy efficiency and to minimize noise, I believe it is best to have a power supply that will operate between 40 and 70 percent load. Therefore, I looked for a power supply that should remain under 70 percent capacity when the computer is at full load. Since my computer has only one video card, I chose the Corsair AX860 power supply. If you are going to run more than one video card, you might want to consider installing a 1200 watt power supply (something like the Corsair AX 1200). ROG Maximus XI Hero

Power Connections:

Installing the 24-pin power cable is quite easy and obvious; but you should read the “User Guide” about connecting to the 8-pin and 4-pin CPU power connectors. At the top of the ASUS Maximus XI Hero motherboard you will find an 8-pin EATX 12 volt power connector (EATX12V_1) and a 4-pin EATX 12 volt power connector (EATX12V_2). The “User Guide” warns us to connect power to the all 8 pins of the 8-pin CPU power connector to lower the power (watts) per pin. The “User Guide” further encourages us to also connect a power cable to the 4-pin CPU power connector.

Warning: In past builds you might have only connected to 4 pins (2 pin pairs) of CPU power supply. Doing so with this motherboard could damage or destroy the board. Therefore, according to ASUS, connect at least 8 pins (4 pin pairs), and possibly 12 pins (6 pin pairs), to reduce the current per pin pair, thereby reducing the risk of damage due to high current. ROG Maximus XI Hero


Before you order memory modules, you might want to download and review the “User Guide” for the ASUS Maximus V Formula motherboard. Also check out the Qualified Vendor Lists (QVL) on the ASUS website. I installed two DDR4 dual in-line memory modules (DIMMs). Up to two pairs of DIMMs (four DIMMs total) may be installed on this board in four slots (for a maximum of 64 GB). Ideally, you should buy the memory modules in “matched sets”: either a matched set of two DIMMs or a matched set of four DIMMs. The “User Guide” recommends installing DIMMs from the same vendor, with the same CAS latency, and of the same version or date code (D/C). If you are interested in over-clocking memory, then you might want to research DDR4 DIMMs with higher clock ratings. ROG Maximus XI Hero

If you want “dual channel” function, only install DIMMs in pairs (two or four DIMMs, not one or three DIMMs). For example, if you want 16 GB of memory, then purchase two 8 GB DIMMs (not one 16 GB DIMM). If you are only installing two (and not four) DIMMS, you MUST install them in two specific slots (see illustration in the “System memory” section in the “User Guide,”, page 1-4). Lastly, you might consider running a memory test on your newly-installed memory. ROG Maximus XI Hero

CMOS Battery was Dead on Arrival:

In the past, I have always installed a fresh (type 2032) CMOS battery before installing a new motherboard. For this build, I did not do that. Post-construction, I quickly realized that the CMOS battery was dead. Yep, ASUS shipped me a motherboard with a dead CMOS battery. No big deal: I should have installed a new one before installing the board. You see, the CMOS battery is located under the video card: It is very easy to replace before you start building and rather inconvenient afterwards. I use a long-lasting 2032 lithium battery; that should last you about 4 to 5 years. ROG Maximus XI Hero

CPU-Cooler Connections:

I used the CORSAIR Hydro Series H100i v2 AIO Liquid CPU Cooler. The H100i v2 manual directs connecting the cooler as follows: plug the pump power connector into the CPU_FAN socket on the motherboard and connect the two fan power cables to the H100i instead of to the motherboard.

The Maximus XI Hero manual directs connecting the pump to AIO_PUMP and connecting the two fans to CPU_FAN and CPU_OPT (instead of to the H100i). I chose to follow the H100i v2 instructions above: connecting the fans to the pump ensures the fans are controlled by pump temperature instead of motherboard temperature (a better indicator of radiator demand, in my opinion). If you connect the pump power to CPU_FAN (and the 2 fans to the pump cables), then go into BIOS and make sure that the fan profile for CPU_FAN is always at 12 vdc (maximum) at all temperatures. ROG Maximus XI Hero

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