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Modular I/O Freedom: Place It Where You Want Top - Rear, Front - Top, Top - Front, and Front - Bottom.
3D-Printable Add-Ons: Customize your Qube 340 with a wide range of 3D-printable accessories, including compatible add-ons designed for the QUBE 540 ecosystem.
Generous Component Clearance: Fit high-performance hardware in a compact build with support for graphics cards up to 366 mm, including RTX 5080 | RX 9070 XT, and CPU air coolers up to 178 mm tall.
Powerful Cooling Support: A high-airflow front panel and multiple fan and radiator mounting options help keep your system running cool and smooth.
Compact Micro-ATX Design: Compact design that supports Micro-ATX and Mini-ITX motherboards with a footprint similar to a large LP record crate.
Modular Handle Placement: Reconfigurable and durable metal handles. Configure your way!
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Learn more about the Cooler Master Q340-KGNN-S00
Model
Brand
Cooler Master
Series
QUBE Series
Model
Q340-KGNN-S00
Details
Color
Black
Motherboard Compatibility
Micro ATX / Mini ITX
Dust Filters
Bottom / Front / Top
Expansion
Internal 3.5" Drive Bays
1
Internal 2.5" Drive Bays
1
Expansion Slots
4
Front Panel Ports
Front Ports
2 x USB 3.2 Gen1 Type-A 1 x USB 3.2 Gen 2x2 Type-C 1 x 3.5 Mic / Audio Combo Jack x1
Cooling System
Fan Options
Bottom - 1 x 120mm / Bottom - 1 x 140mm / Front - 2 x 120mm / Front - 2 x 140mm / Rear - 1 x 120mm / Rear - 1 x 140mm / Top - 2 x 120mm / Top - 2 x 140mm
Pre-installed Fans
Rear - 1 x 140mm
Radiator Options
Front - Up to 120mm / Front - Up to 240mm / Rear - Up to 120mm / Top - Up to 120mm / Top - Up to 240mm
Dimensions & Weight
Max GPU Length
366 mm
Max CPU Cooler Height
178 mm
Max PSU Length
200 mm
Dimensions
374 x 230 x 374 mm
Weight
6kg
Additional Information
First Listed on Newegg
June 16, 2026
Customer Reviews of the Cooler Master Q340-KGNN-S00