Cooler Master QUBE 540 ATX Mid-Tower PC Case – Highly
Cooler Master QUBE 540 ATX Mid-Tower PC Case – Highly Customizable Modular Computer Chassis with Movable I/O Panel, Multi-Position PSU Mount, Tempered Glass Panel & Portable Handles – Stardust Iro
- Flexible Orientation Design – Engineered to work seamlessly in both horizontal and vertical positions, with a reversible I/O panel and movable handles that let you customize layout, improve accessibility, and reposition the case effortlessly.
- GPU Compatibility – Offers up to 415 mm GPU clearance w/o the front fan for full-size graphic cards, including RTX 5090 and RX 9070 XT.
- Motherboard Compatibility – Supports ITX, ATX, and large E-ATX motherboards (up to 11" wide), all within a compact ATX form factor for maximum build flexibility.
- Mesh-Optimized Airflow– Full front mesh panel maximizes ventilation for superior cooling under load, paired with a pre-installed SickleFlow 120mm fan for improved airflow.
- USB Type-C & Full I/O Connectivity – The I/O panel includes 2× USB 3.2 Gen1 ports and a USB 3.2 Gen2 Type-C port, giving you fast and convenient front-access connectivity.
The Qube 540 redefines DIY PC building with its beginner-friendly flat-pack design and fully customizable interior. This compact ATX case removes the limits of traditional layouts, giving you the freedom to create your ideal internal setup. It also supports 3D-printed external accessories, allowing you to personalize both the look and functionality of your build.
| SKU: | B0G2TDJBN9 |
| Weight: | 17.9 Pounds |
| Brand: | Cooler Master |
| Colour: | Black |
| Manufacture: | Cooler Master |
| Colour: | Black |
From the manufacturer



Pegboard-Inspired Side PanelsAttach accessories, tools, or gadgets using the modular side panels—designed for easy add-ons inside or out.
” data-position=”triggerHorizontal” />GPUSupports GPUs up to 415 mm, giving you room for the most powerful cards on the market.
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MasterFrame 500 Mesh
Dimension (L x W x H) /Volume
438.5 x 225 x 492.1 mm / 40.6 L
Dimension (L x W x H) /Volume
531 x 261 x 544 mm / 69 L
Dimension (L x W x H) /Volume
471 x 261 x 544 mm / 60.9 L
Compatible Motherboard
ITX / M-ATX / ATX / *E-ATX (*Up to 280 mm)
Compatible Motherboard
Mini-ITX, Mini-DTX, Micro-ATX, ATX , E-ATX*, SSI-CEB* (*Conditional Support)
Compatible Motherboard
Mini-ITX, Mini-DTX, Micro-ATX, ATX , E-ATX*, SSI-CEB* (*Conditional Support)
CPU Cooler/GPU/PSU Clearance
72 / 415 / 200 mm
CPU Cooler/GPU/PSU Clearance
190 / 485 / 235 mm
CPU Cooler/GPU/PSU Clearance
190 / 390 / 235 mm
Color
Stardust Iron / Moonstone
Color
Black / Silver
Color
Black / Silver
LED Profiles
Non-LED
LED Profiles
Non-LED
LED Profiles
Non-LED / ARGB













No for first timers, Yes for vets
The build quality here for a budget case is unmatched in material selection and ease of transport. However cable management and path selection for wire aesthetics is unbelievably meticulous, and RIP any beginner who wants a sleek looking case display. 5 of 5 for expert value. 3 of 5 for a beginner or casual builder.
Great Cooling, Not good for first time builder.
Nice modular design. Definitely takes Thinking on component installation, to another level when building a new pc, (Do Not Recommend for first time builders) to use. I had part fitment issues, had to order new parts to work and then return parts that didn’t. Otherwise I like the case and does Great for Cooling.
Cooler master Qube 540
I love the design, a little modern, a little apple, a little industrial. ATX support for motherboard and PSU. Cooling is performance is great. A little Issue i had was not so clear mounting instructions for at the ATX psu (bottom mounted) and another issue i have is the fan mounting plate is warped and causes both 140 or 120mm double fans and to have vibration/humming sound. I have 2 different fans. Wonder if cooler master could send me another one of the fan mounts thats not so warped.
I’ve owned a lot of PC cases through the years, and this one is definitely one of the nicest. The fit and finish is excellent, and it’s very sturdy. There is a lot of flexibility in how to set up the internals, and I was able to easily fit a dual Xeon ATX board in with plenty of room to route cables and install a full load of PCI-E cards and multiple SSDs and an HDD drive. Ventilation is excellent – I built a workstation, not a gaming rig, so I am not taking advantage of the top and bottom fan mounts, but it’s nice to know I can if needed.
Nice Case
This case is pretty durable and I’m excited to see what 3D printed parts Cooler Master and the community will have available to build on! Only complaint so far is that cable management is a little tricky, you do have to take some time to really organize the cables. The backside does offer some space for zip ties to help with cable management. The whole case except for 2 small openings has dust filters which seem pretty easy to get to for cleaning. The case has plenty of airflow. There’s room for 2 120mm fans on the bottom for intake air, 3 fans on top, and 1 fan on the back for exhaust fans. Hopefully, the inside will look better after taking some time to cable manage.