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Cooler Master MasterBox K501L RGB Case

The Cooler Master MasterBox K501L RGB Case features a tempered glass side panel, with an angled front panel with ventilation for optimal airflow, dust filters, supports m-ITX, m-ATX, ATX, SSI CEB, and e-ATX (supports up to 12" x 10.7") motherboards, 1 x pre-installed 120mm RGB fan, 1 x pre-installed 120mm rear fan, radiator support at the front and top (up to 360mm), and supports a graphics card of up to 410mm in length.


Angled ventilation

The aggressive, angled front panel ventilation dons sharp design elements and striking lines, signifying the K501L’s competitive character.

Illuminated fan & power button

Paired with lighting on the power button, an illuminated fan glows through the angled ventilation; a testament to its gamer core.

Edge-to-edge transparent side panel

Showcase your build through the transparent side panel.

Dual 360mm radiator support

For enthusiast-grade cooling, two 360mm radiators are supported on the top and front panel to keep the most extreme systems cool.

Versatile cooling options

Support for up to seven 120mm fans and 360mm front and top radiator support ensure that performance is not compromised.

Motherboard support

Supports Mini-ITX, Micro-ATX, ATX, SSI-CEB, and E-ATX motherboards.

Versatile component support

Clearances of 410mm for the graphics card, 165mm for CPU coolers, and 180mm for PSUs offer room for powerful builds and future upgrades.


Model Number MCB-K501L-KGNN-SR1 (MasterBox K501L RGB)
Available Colour Black
Materials Steel, Mesh, Plastic, Tempered Glass (MCB-K501L-KGNN-SR1)
Dimensions (L x W x H) 496mm x 217mm x 469mm (incl. Protrusions), 428.7mm x 205mm x 458.5mm (excl. Protrusions)
Volume (exlc. Protrusions) 40.3L
Motherboard Support Mini ITX, Micro ATX, ATX, SSI CEB, E-ATX (support for up to 12" x 10.7", will limit cable management features)
Expansion Slots 7
5.25" Drive Bays 0
2.5" / 3.5" Drive Bays (combo) 2
2.5" Drive Bays 4 (2+2 combo)
I/O Panel 1x USB 3.0 Type-A, 1x USB 2.0, 1x 3.5mm Audio Jack, 1x 3.5mm Mic Jack
Pre-installed Fans - Top N/A
Pre-installed Fans - Front 1x 120mm RGB LED (MCB-K501L-KGNN-SR1)
Pre-installed Fans - Rear 1x 120mm
Fan Support - Top 3x 120mm, 2x 140mm
Fan Support - Front 3x 120mm, 2x 140mm
Fan Support - Rear 1x 120mm
Fan Support - Bottom N/A
Clearance - CPU Cooler 165mm/6.49"
Clearance - PSU 180mm/7.08", 295mm/11.61" (w/ HDD cage removed)
Clearance - GFX 410mm/16.1"
Cable Routing 19mm/0.74"
Dust Filters Top, Front, Bottom
Power Supply Support Bottom mount, ATX
Warranty 2 years
Weight 6.3 kg
Series MasterBox Series
Size Mid Tower
Backed by a 2 year Cooler Master warranty.

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