Rosewill Legacy V3 Plus-B Mini-ITX Case


Product: Rosewill Legacy V3 Plus-B Black Aluminum Mini-ITX Cube Computer Case
Provided By: Rosewill
Price: ~$59.99 at time of publication


Rosewill is not the first name you might think of when choosing your next PC case, but they've been making cases for quite a while and they know how to do it and get the job done. Getting the job done right, can be a lot different than simply getting the job done. Rosewill has a wide range of cases that extend from full-tower cases that are heavily laden with plastic to mid-range cases that are more for the budget-minded audience. They also have a few smaller cases built for the mATX and ITX market. I've noticed that Rosewill has an eye for style and while you may not always like their style, it's pretty hard not to like the style of the Legacy V3 Plus-B.



First Impressions:

The Rosewill Legacy V3 Plus-B Black Aluminum Mini-ITX case is a full-on aluminum case without much plastic in the built at all. It is completely fan-less and while they claim it supports up to four 40mm fans, not many people will be installing a bunch of fans inside this little aluminum cube. This case relies more on passive cooling through the side and rear ventilation as well as the aluminum design.


As you can see below, the holes in the left side panel allow for a fair bit of airflow in this case and the warm air that accumulates will be passed out through the rear ventilation, the aluminum case itself as well as the exhaust fan on the power supply. While you may be tempted to build a fanless computer inside this case, it would be wise to make sure that the PSU at least has a fan to help get rid of the air that will become very hot.

Side Profile Other Side Profile


As you can see on the right side panel, the Legacy V3 Plus-B supports two USB ports as well as the standard audio microphone and headphone jacks. There is one USB 2.0 port as well as one USB 3.0 port on this case. This requires a pair of connectors inside the chassis to hook to the motherboard. In many ways it would make more sense to have two USB 3.0 ports and a single cable inside, but if your motherboard doesn't support it, you'd have no front USB ports. This way, they give you the option of having one working USB port at the very least.



The bundle included with the Legacy V3 Plus-B is very basic. There are a total of three cable ties, four case feet and enough screws to mount an ITX motherboard as well as both 3.5-inch and 2.5-inch drives. There is nothing else, and this is not a bad thing. For the price of this case, I don't expect much else as the build quality of the aluminum enclosure is excellent. I guess if I paid $100 for this case, I'd hope for a little more, but for the price, it's got everything you need.

On the next page, we'll take a look at the features and specifications of the Rosewill Legacy V3 Plus-B case before we take a closer look and do a build in the case to see how it all works.



  • Please make sure your motherboard equipped with on-board USB 3.0 socket before purchasing.
  • CPU Cooler: Not Higher than 80mm
  • Display Card: Not Longer than 180mm
Ideal for Intel & AMD Systems 
Support Standard ATX PSII PSU 
Sturdy Construction
Side Panel Off Rear Empty
Support up to 4 40mm Fans (Optional) 
Drive Bays: 
  • Base Plate: You can install either 1 x 2.5" HDD or 1 x 3.5" HDD


Top Screws


As you can see above, the inside of the case is pretty clean. The downside to the whole inside of the case is the two USB cables that take a bit more management. Also, the drive "bays" are merely holes in the bottom of the case. They have rubber shocks to help prevent vibration and noise. This is a nice touch for the drives. As you can see immediately above, there are screws that can be removed if you need to access your hardware from the top of the case. In our installation, we didn't need to remove these and we could access everything from the side.





The case is made of aluminum and that's why it weighs a little over a Kg. I'm pretty happy with the overall size as well as it is very compact and still supports graphics cards up to 18cm long.


As we jump right into hardware installation and putting a system together, we'll get to know the case right away. While the top can be removed with a few screws, we left that together and simply pulled the side off and put the system together - much like you would with any other system. It is obviously a little more crowded in this case that your standard ATX case, but for the most part, things went together quite smoothly.

The system we put together is as follows:

  • Intel Core i3-3220 @ 3.3GHz CPU
  • ASUS P8H61-I R2.0 Motherboard
  • 4GB Crucial Ballistix DDR3-1600MHz
  • Zotac GeForce GTX 660 Ti Graphics Card
  • 2TB Western Digital Black HDD
  • Noctua NH-L9i Low Profile Cooler
  • Thermaltake TR2 TX 550W PSU


The motherboard standoffs were already installed so installation of the motherboard was very simple. We simply installed the rear I/O shield and then strapped the board down with the four screws that were provided. Once we installed RAM on our board we were good to go. As you can see in the image below, there isn't a ton of room in this case, but with the power supply removed, there is room to change out a basic heatsink, install RAM and even set jumpers to reset CMOS if required. While the case is pretty tight, the lack of obstructions make it workable.

Board Installed


In order to install the hard drive, you'll have to think ahead and make sure to plug in the required SATA data and power cables before you install the drive. The bottom holes for the drive are positioned so that the cables remain mostly out of sight behind the drive. This is a great idea and you'll be able to keep the cables tucked out of sight behind the drives and the power supply to make the system look better in the advent that you remove the side panel. As you can see below, there is room for a standard 3.5-inch hard drive to fit under a two-slot graphics card, but it's pretty tight. The space between these two is about the same as when stacking multiple cards for SLI so it will work. That being said, if you have a 2.5-inch drive, it will give the card more room to breathe. Of course you don't have to use any graphics card at all as most CPUs for ITX systems - or the motherboard itself has an integrated graphics controller. Our goal here was to build a system that is very compact and is still able to play most games. This can do it.

Hardware Installed


Installation of the drives, graphics cards and more requires that you think ahead and make sure that cables are in place before you start blocking things with more hardware. Thankfully, I only had to build this system once as I thought through the process and made sure my SATA cables were in place before I plugged in the graphics card.


Once you install the power supply, the system gets a little full. In the image below, we used the Rosewill SilentNight 500W Fanless PSU, but had to swap that out for a PSU with a fan as there was no way air could leave the system. That idea I had was nice, but with a hot GPU cooking things, it didn't work out. I did try this PSU without the GPU and used integrated graphics and this case, CPU and PSU option worked amazing. That is because the Core i3-3220 is such a cool-running CPU. The graphics card caused us the issues. With that in mind, if you are building a silent HTPC, the SilentNight PSU combined with this case and a Core i3 CPU will make you very happy.

PSU Installed


As you can see above, the case isn't all that much bigger than a PSU in terms of length and height. You can also see that we've installed standard components in this case and it has space to make everything work just fine. It's impressive that a case this small can house a full-size PSU, full-sized HDD, Intel Core i3/i5/i7 CPU as well as a mid-length graphics card. The layout works well, although you won't be breaking and PC Race records with this case.

On the last page we'll take a look at the system all installed and get it up and running as we draw a few conclusions.


At the end of the day, the ITX case market is pretty small - and so in the form factor. There are some ITX cases that are so limited in terms of expansion and others that are the same size as their mATX and ATX counterparts that don't really offer any advantages. The Legacy V3 Plus-B is a great size, has amazing clean looks and offers a lot of expansion. While it won't support super large graphics cards, it does support standard cards as well as standard power supplies. This gives great flexibility to your small ITX build.

The Legacy V3 Plus-B is a solid product as it is the perfect middle-ground between size and function. With that in mind, there are a couple of drawbacks. The fanless design of the case is wonderful and the aluminum case helps dissipate heat, but if you have a graphics card and intend on using it for many long hours of gaming, you'll need to make sure your PSU can handle the heat-load and if it will be able to provide adequate ventilation to the system. The only other drawback is the small clearance between a standard 3.5-inch hard drive and a standard two-slot cooled graphics card. There is room for sure, but the drive restricts some airflow and will make the card run hotter.

Rear Installed


I's pretty hard to argue with good looks and decent performance though. As you can see in the images on this page, the case - all installed and ready to go - is a looker. It has a very sleek and attractive design that does exactly what it's supposed to do. It provides a silent enclosure for systems that don't put out a lot of heat. While it not perfect for high-end gaming systems, neither is the ITX platform so it really doesn't matter.

Front Profile

What you get with the Rosewill Legacy V3 Plus-B is a solid case that has a nice array of features, a compact size, room to expand beyond your ITX motherboard in terms of video cards and other add-in cards. It does this while looking great and at a price that you'll be able to afford.


  • All aluminum case
  • Rubber feet and pads for hard drives
  • Supports one 2.5-inch and one 3.5-inch drive
  • Very compact design
  • Fits standard PSU and graphics cards under 18cm length
  • Good value
  • USB 3.0 and USB 2.0 support



  • Dual USB support requires two cables adding to the crowded interior
  • Fanless design limits components inside
  • Very little space between 3.5-inch HDD and Graphics Card


Ever though there are a couple of things making this case not quite perfect for every situation, for many ITX builds it simply is the perfect case. It has incredible looks, is very solid and is very compact and at the same time it still can hold standard PC components. It may not be golden, but it is certainly a solid choice for anyone looking to build a quite HTPC.

I'd like to thank Rosewill for sending us the Legacy V3 Plus-B Mini ITX Case to review. If you have any questions, comments or general feedback, please post it in the forum at the link below.