Where can the magnetic screen be purchased?

They come with the tower. I don't know of a separate source unless Cooler Master can sell screen separately. One other unrelated detail. There is no internal reader/writer bay. You would have to use an external USB port for an external reader/writer drive.

can you still mount a standard size power supply with the psu mounting bracket?

Yes a standard size power supply will fit, but if it is longer than 160 mm it will shorten you graphics card max length to 270 mm.

How many usb ports are on the back?

On the back there are no usb ports on the case but the motherboard should have them depending on what motherboard you use. Two case ports are on the window side as you can see.

so i have an atx motherboard and a evga 700w bronze psu. Hows does the vertical mounting of the psu with all the ports and plugging in of the actual power supply?

I would reword this cause I'm inherently confused, but to attempt to answer your question the case comes with a vertical mount that you screw in. if the power supply is facing out with all of the power cords it shouldn't be an issue.

$230^.63

Free 30-day Returns

Limit 99999 per customer.

Ships from Canada.

Price alert

Add to wish list

Sold by BTE Outlet

3.5 (1,428 seller ratings)

Shipped by BTE Outlet

Meet Your Seller

BTE Outlet

See Seller Store

Get Educated

Make informed decisions with expert advice. Learn More

Main image of Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 2 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 3 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 4 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 5 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 6 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 7 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 8 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 9 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 10 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 11 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 12 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 13 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 14 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 15 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 16 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 17 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 18 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 19 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Alt view image 20 of 20 - Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

Customer images

Shop All Cooler Master Products | Visit BTE Outlet Store

Cooler Master MasterBox Q500L Mid Tower w/ ATX MB Support, Magnetic Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow

(519)(57) Write a Review

Options: MasterBox Q500L (Black)

MasterBox Q300L (Black)
MasterBox Q300LV2 (Black)
MasterBox Q500L (Black)
MasterBox Q300LV2 (White)

Minimized Dimensions for Standard ATX - The MasterBox Q500L supports standard ATX motherboards and PSUs, with a body depth and height of only 386 x 381mm.
Fully Perforated Chassis - The top, front, rear, and bottom panels are fully perforated to offer airflow for various fan configurations.
Movable I/O Panel - Orientation for the chassis is versatile, with the option to move the I/O Panel to 6 different locations.
Vertical and Horizontal Position - The case can be oriented vertically or horizontally while retaining easy access to the I/O. Rubberized screws also function as feet to supplement different orientations.
Vertical PSU Placement - The PSU is positioned on the front of the chassis to fully utilize internal space. The bracket can be relocated to offer position options depending on preference and form factor.

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

Overview

Specs

Reviews (519)

Any questions? Our AI beta will help you find out quickly.

Try me now

Orientation & A Movable I/O Panel
The modular MasterBox Q500L can orient vertically and horizontally with rubberized thumbscrews that also act as feet. Depending on hardware configuration, the movable I/O panel can be relocated to multiple positions to retain its accessibility.
Versatile PSU Bracket
The PSU bracket enables the PSU to adapt to different clearance requirements and motherboard form factors. The PSU bracket can shift up or down for top radiator/graphics card clearance and can also be relocated for ITX systems.
Fully Perforated Chassis
The top, front, rear, and bottom panels are fully perforated to support various fan configurations.
Magnetic Dust Filters
The magnetic dust filters feature a unique design. Magnets allow for quick removal and installation for easy cleaning of the dust filters with rubber stompers to keep the filters from sliding.
Cooling Support
The bottom supports up to two 120mm fans.
The rear supports a 120mm fan or 120mm radiator.
The top supports up to two 120mm/140mm fans or a 120/240mm radiator.
Storage Support
Each storage caddy can mount either 2x 2.5" drives or 1x 3.5" drive, two caddies included.
Possible Configurations:
4x 2.5" drives | 2x 3.5" drives | 2x 2.5" drives + 1x 3.5" drive
Motherboard Support
The internal layout and PSU location adapts to the motherboard. If a standard ATX motherboard is used, the PSU mounts to the top-front of the chassis with the ability to shift upward or downward. For mini-ITX builds, the PSU can be located in the conventional bottom-rear position for increased front panel ventilation.
Clean Routing Space
Behind the motherboard tray, 27~30mm width of space is offered for cable management with the entire perimeter dedicated as a channel for cables.

Powerful PC build doesn't have to be big in size. Featuring a minimized dimension of mere 386 mm (D) x 381 mm (H), the MasterBox Q500L ATX Mid Tower case can house standard ATX motherboards and PSUs. With versatile positions for I/O panel and PSU and support for versatile 3.5/2.5" drive and fan/radiator combinations, the configuration and layout of your system are full of possibilities. No matter the configuration and layout, the acrylic side window and clean cable management make your system look tidy and clean.

Magnetic Dust Filters

Magnets allow quick removal and installation for easy cleaning of the dust filters.

Minimized Dimensions, Standard ATX Support

The MasterBox Q500L supports standard ATX motherboards and PSUs, with a body depth and height of only 386 mm x 381 mm.

Fan/Radiator Support

Support for the following fan/radiator form factors:

TOP: 120/240 mm radiator, or 120/140 mm x2 fans
REAR: 120 mm radiator or fan
BOTTOM: 120 mm x2 fans

Drive Bay Support

Two combo 3.5/2.5" drive bays—each bay supports one 3.5" HDD or two 2.5" SSDs.

Six-Location I/O Panel

Orientation for the chassis is versatile, with the option to move the I/O Panel to six different locations: left and right—top, side and bottom.

Vertical PSU Placement

The PSU is positioned at the front of the chassis to fully utilize internal space. The bracket can be relocated to offer position options depending on preference and form factor.

Clean Routing Space

Behind the motherboard tray, 27–30 mm width of space is offered for cable management.

Model
Brand	Cooler Master
Series	MasterBox Q500L
Model	MCB-Q500L-KANN-S00

Details
Type	Mid Tower
Color	Black
Case Material	Steel / Plastic
With Power Supply	No
Power Supply Mounted	Top or Bottom
Motherboard Compatibility	Micro ATX / ATX / Mini-ITX
Side Panel Window	Acrylic Window
Dust Filters	Bottom

Expansion
Internal 3.5" Drive Bays	2 x Combo 3.5" / 2.5" (each bay supports: 1 HDD or 2 SSDs)
Hot-Swap Drive Bays	0
Expansion Slots	7

Front Panel Ports
Front Ports	2 x USB 3.0 / Audio

Cooling System
Fan Options	Top: 2 x 120mm or 2 x 140mm fan Rear: 1 x 120mm fan (Pre-installed) Bottom: 2 x 120mm fan
Radiator Options	Top: 120mm / 240mm (35mm max motherboard component height) Rear: 120mm
80mm Fans	No
120mm Fans	No
140mm Fans	No
Side Air duct	Yes

Dimensions & Weight
Max GPU Length	360mm / 14.17 inch (270mm clearance with PSUs longer than 160mm)
Max CPU Cooler Height	160 mm
Max PSU Length	180 mm
Dimensions (H x W x D)	15.20" x 9.06" x 15.0"
Weight	8.40 lbs.

Additional Info
Features	Minimized Dimensions for Standard ATX - The MasterBox Q500L supports standard ATX motherboards and PSUs, with a body depth and height of only 386 x 381mm. Fully Perforated Chassis - The top, front, rear, and bottom panels are fully perforated to offer airflow for various fan configurations. Movable I/O Panel - Orientation for the chassis is versatile, with the option to move the I/O Panel to 6 different locations. Vertical and Horizontal Position - The case can be oriented vertically or horizontally while retaining easy access to the I/O. Rubberized screws also function as feet to supplement different orientations. Vertical PSU Placement - The PSU is positioned on the front of the chassis to fully utilize internal space. The bracket can be relocated to offer position options depending on preference and form factor.

Additional Information
Date First Available	July 02, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
Read full details
CONTACT

Return Policies

Return for refund within: 30 days
This item is covered by BTE Outlet Return Policy

Manufacturer Contact Info

For a directory of all our manufacturers, please click below.
Manufacturers Directory

Meet Your Seller