CHIEFTEC AIO 4U Rackmount Chassis UNC-409S-AIO-OP (ATX/EATX, Black, No PSU)

CHIEFTEC UNC-409S-AIO-OP — Versatile Rackmount Chassis

This 4U rackmount chassis is designed for demanding industrial applications and high-performance server configurations. Supporting a wide range of motherboards—including SSI-EEB, E-ATX, and other formats—it is ideal for professional data centers and computing environments. The chassis is constructed from 1.2mm SGCC steel, ensuring exceptional durability and longevity. With support for 360mm AIO liquid cooling, it delivers reliable thermal management even under heavy heat loads. Flexible power supply support (standard ATX PSU or 1+1 redundant PSU) makes this model an excellent choice for users who value adaptability.

Construction and Durability

The CHIEFTEC UNC-409S-AIO-OP chassis is built from robust 1.2mm SGCC steel, ensuring mechanical stability and resilience in demanding conditions. Its 480mm depth allows for the installation of graphics cards up to 450mm in length (without an AIO radiator), making it ideal for modern, high-performance computing builds. The chassis design makes it suitable for deployment in rigorous industrial environments or data centers where reliability is paramount. ### Cooling and Thermal Efficiency

The front of the chassis supports the installation of 360mm or 240mm radiators or 120mm fans, offering flexibility for various cooling setups. For rear cooling, two 80mm fans are available, effectively dissipating heat even under heavy loads. The maximum CPU cooler height is 70 mm (with the 3.5" cage) or 130 mm (without the cage), allowing for adaptation to various cooling requirements. This configuration ensures stable performance even under sustained loads.

Flexibility and Expandability

The chassis supports a wide range of motherboards, from Mini-ITX to SSI-EEB, making it an ideal choice for various server configurations. It features 7 expansion slots for PCIe cards, providing ample room for expansion. Internal storage bays accommodate two 3.5" and two 2.5" drives, facilitating easy management of high-capacity storage. A front I/O panel with two USB 3.0 ports allows for quick access to peripherals.

Technical Specifications

• Dimensions: 480 × 427 × 176.8 mm
• Weight: 9.71 kg
• Supported Motherboards: Mini-ITX, M-ATX, ATX, E-ATX, SSI-CEB, SSI-EEB
• Power Supply: Optional standard ATX PSU or 1+1 redundant PSU (mounting kit not included)
• Internal Storage Bays: 2× 3.5", 2× 2.5"
• Cooling - Front: 3× 120mm fan / 240mm radiator / 360mm radiator
• Cooling - Rear: 2× 80mm fan
• Maximum CPU cooler height: 70 mm (with 3.5" cage) / 130 mm (without cage)
• Maximum graphics card length: 450 mm (without AIO radiator)

Package contents

• 7× PCIe guide rail
• PCIe card bracket
• Screw set