Cooler Master

Cooler Master MasterBox Lite 3.1

Name: Cooler Master MasterBox Lite 3.1
Brand: Cooler Master
SKU: cooler-master-masterbox-lite-31-microatx-mid-tower-case-mcw-l3s3-kgnn-00

Mid TowerBlack / RedTempered GlassMax GPU 380mm

compactbudgetgaming

Pricing is still being verified

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External Volume Liters36.1

Drive Bays 352

Drive Bays 251

Front IoUSB 3.2 Gen 1 Type-A | USB 2.0 Type-A

Has Front USBcNo

Power Supply ShroudNo

Radiator Support120 mm | 240 mm

Max Radiator mm240

Fan Support120 mm

Dimensions456 x 208 x 381 mm

Requested Slugcooler-master-masterbox-lite-31-microatx-mid-tower-case-mcw-l3s3-kgnn-00

Canonical Slugcooler-master-masterbox-lite-31-microatx-mid-tower-case-mcw-l3s3-kgnn-00

About This Product

The Cooler Master MasterBox Lite 3.1 is a MicroATX mid-tower case designed for compact builds. It supports Micro ATX and Mini ITX motherboards, offering a balance of size and component compatibility. With a maximum GPU length of 380mm, it accommodates most modern graphics cards, suitable for 1080p to 1440p gaming systems. Its tempered glass side panel provides a view of internal components, a common feature in its price segment.

Best for: Compact budget builds

Pros

Compact MicroATX form factor
Tempered glass side panel included
Supports long graphics cards
Radiator support up to 240mm

Cons

Limited drive bay options
Only one front USB 3.2 Gen 1 port
Restricted fan mounting options

Verdict
“Good for budget-conscious builders needing a compact MicroATX case with basic features and GPU support.”

Full Specifications

Format

SizeMid Tower

ColorBlack / Red

Side PanelTempered Glass

Compatibility

Max GPU Length380 mm

Expansion Slots4

Other

TypeMicroATX Mid Tower

Supported Form FactorsMicro ATX, Mini ITX

External Volume Liters36.1

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Drive Bays 35

2