Chieftec GS-03B-OP computer case Midi Tower Black

The Chieftec GS-03B-OP is a black Midi Tower PC case designed to accommodate Mini-ITX, Micro ATX, ATX and EATX motherboards. It includes a side window, dust filters and preinstalled cooling fans to support internal airflow and mounting of 2.5" and 3.5" drives. The case dimensions provide space for typical gaming and productivity builds while keeping a compact mid-tower footprint.

Advantages

The case comes with multiple preinstalled fans to improve airflow, a side window for component visibility, and anti-dust filtering to reduce maintenance. It supports several motherboard form factors and both 2.5" and 3.5" drive sizes, offering flexibility for storage and system configuration.

Suitable for

• Home or office desktop builds
• Mid-range gaming PCs
• Productivity and multimedia workstations
• Systems requiring multiple HDDs or SSDs (2.5" and 3.5")

Key specifications

• Form factor: Midi Tower
• Supported motherboard sizes: Mini-ITX, Micro ATX, ATX, EATX
• Preinstalled fans: front and rear configuration (includes three 140 mm front fans and one rear fan)
• Side window: yes
• Dust filter: yes
• Drive support: 2.5" and 3.5" HDD/SSD bays
• Exterior colour: black
• Dimensions (approx.): 238 mm (W) x 440 mm (D) x 450 mm (H)
• Weight: 8.06 kg

How to use

Install a compatible motherboard (Mini-ITX, Micro ATX, ATX or EATX) following the standoffs and I/O alignment, mount storage drives into the dedicated 2.5" or 3.5" bays, and connect the preinstalled fans to the motherboard fan headers or a fan controller. Install the power supply in the designated compartment and route cables through the case cutouts for optimal airflow and neat cable management. Verify front-panel connectors are connected to the motherboard header before powering on.

Recommendations

For reliable cooling performance, use the case's preinstalled front 140 mm fans in combination with the rear fan and keep dust filters clean. When installing high-profile CPU coolers or long graphics cards, check component clearance against the case dimensions. Use 2.5" SSDs for faster system drives and 3.5" HDDs for larger mass storage.