

The MasterBox Q300P is your portable option in the lineup of the brand new MasterBox Q-series from Cooler Master. A series that might be small in size but excels in functionality and modularity without compromising on the thermal performance.
Four removable handles and the DarkMirror front and top panels makes the chassis easy to transport and stands out from the rest. Although the size wouldn't tell, the MasterBox Q300P supports a standard ATX PSU which we don't see often in the market with this size.
Due to the cube design of the frame you can turn and rotate this chassis in multiple positions. The I/O panel can be adjusted to six different locations, three options at each side of the case. Two RGB fans are pre-installed in the front of the case. You can decide which setup and color theme fits you best.
The combination of the portable design and the unique exchangeable outlook makes the MasterBox Q300P the perfect choice for gamers and creative builders.
| Form factor | Midi-Tower |
| Type | PC |
| Material | Plastic, Steel |
| Number of 3.5" bays | 1 |
| Supported motherboard form factors | Micro-ATX,Mini-ITX |
| Colour of product | Black |
| Side window | Yes |
| Number of 2.5" bays | 2 |
| Illumination | Yes |
| Illumination location | Case fans |
| Illumination colour | Red/Green/Blue |
| Anti-dust filter | Yes |
| Number of expansion slots | 4 |
| Maximum CPU cooler height | 15.7 cm |
| Maximum graphics card length | 36 cm |
| Maximum PSU length | 16 cm |
| Power supply included | No |
| Power supply location | Bottom |
| Supported power supply form factors | ATX,PS2 |
| USB 3.0 (3.1 Gen 1) Type-A ports quantity | 2 |
| Audio input | Yes |
| Audio output | Yes |
| Front fans installed | 2x 120 mm |
| Maximum front fans | 2 |
| Front fans diameters supported | 120,140 mm |
| Rear fans installed | 1x 120 mm |
| Maximum rear fans | 1 |
| Rear fans diameters supported | 120 mm |
| Maximum top fans | 2 |
| Top fans diameters supported | 120 mm |
| Maximum bottom fans | 1 |
| Bottom fans diameters supported | 120 mm |
| Cooling | Yes |
| Liquid cooling capability | Yes |
| Front radiator fan sizes supported | 120,240 mm |
| Rear radiator fan sizes supported | 120 mm |
| Supported hard disk drive sizes | 2.5,3.5" |
| LED indicators | Yes |
| Cable management | Yes |
| Width | 230 mm |
| Depth | 450 mm |
| Height | 450 mm |
| Weight | 5.2 kg |
| Package width | 277 mm |
| Package depth | 510 mm |
| Package height | 527 mm |
| Package weight | 6.4 kg |

