1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Chieftec CI-01B-OP mATX Chasis. This chassis is designed for micro-ATX systems, offering a compact yet versatile solution for PC builders. Please read this manual thoroughly before beginning any installation.

This image displays the Chieftec CI-01B-OP mATX Chasis from a front-side angle, highlighting its black finish and honeycomb mesh front panel design.
2. Package Contents
Please verify that all items listed below are present in your package before proceeding with installation. If any items are missing or damaged, contact your retailer.
- Chieftec CI-01B-OP mATX Chasis
- Set of mounting screws
- Dust filter
- HDD rails
- Mounting instructions (this manual)
3. Key Features
The Chieftec CI-01B-OP mATX Chasis offers several features designed for ease of use and performance:
- Form Factor: Compact mATX cube design.
- Front Panel: Honeycomb stamped mesh for optimized airflow.
- Front I/O Ports: 2x USB 3.0, 1x USB 2.0, Mic-in, Audio-out (AZALIA / HD-Audio).
- Drive Bays: 1x 5.25" external, 2x 3.5" internal, 3x 2.5" internal.
- VGA Card Support: Maximum length of 320mm.
- CPU Cooler Support: Maximum height of 150mm.
- Material: Durable 0.6mm thick metal construction.

This image shows a close-up of the top panel of the chassis, detailing the integrated USB 3.0, USB 2.0, microphone, and audio ports.
4. Setup and Installation
Follow these steps for proper component installation. Ensure the system is powered off and unplugged from the wall outlet before beginning any installation to prevent electric shock or damage to components.
4.1. Preparing the Chasis
Remove the side panels and any necessary covers to access the interior. Refer to the chassis diagram for panel removal instructions.

This image provides an internal view of the chassis, showing the motherboard tray, drive bays, and general component layout.
4.2. Motherboard Installation
- Install the I/O shield into the rear opening of the chassis.
- Align your micro-ATX motherboard with the pre-installed standoffs inside the chassis.
- Secure the motherboard using the provided screws. Do not overtighten.
4.3. Power Supply Unit (PSU) Installation
- Mount the PSU in its designated area, typically at the rear bottom of the chassis.
- Secure the PSU with screws from the rear of the chassis.
4.4. Drive Installation
- 3.5" HDDs: Attach the provided HDD rails to your 3.5" hard drives and slide them into the internal 3.5" drive bays until they click into place.
- 2.5" SSDs/HDDs: Secure 2.5" solid-state drives or hard drives into the dedicated 2.5" bays using screws.
- 5.25" ODD: Install 5.25" optical drives into the external bay from the front and secure them with screws or tool-less mechanisms if available.
4.5. Graphics Card (VGA) Installation
- Remove the necessary expansion slot covers at the rear of the chassis.
- Insert the graphics card into the appropriate PCIe slot on the motherboard.
- Secure the graphics card with a screw or latch. Ensure the card's length does not exceed 320mm.
4.6. CPU Cooler Installation
Install your CPU cooler according to its manufacturer's instructions. Ensure the cooler's height does not exceed 150mm to allow the side panel to close properly.
4.7. Cable Management
Route power and data cables neatly behind the motherboard tray or through designated cutouts. This improves airflow and maintains a clean interior aesthetic.

This image shows the chassis with its top and side panels opened, revealing the internal structure and providing a clear view of the space available for component installation and cable routing.
4.8. Connecting Front Panel Cables
Connect the front panel USB 3.0, USB 2.0, audio, power switch, reset switch, and LED cables to the corresponding headers on your motherboard. Refer to your motherboard manual for specific header locations and pin assignments.
5. Operation
Once all components are securely installed and connected, carefully close and secure the chassis panels. Connect the power cable to the PSU and an electrical outlet. Press the power button on the front panel to start your system.
6. Maintenance
Regular maintenance helps ensure optimal performance and longevity of your chassis and its components.
- Dust Filters: Periodically clean the dust filters (e.g., front mesh, bottom PSU filter) to maintain good airflow and prevent dust buildup inside the system. Dust can impede cooling efficiency.
- Interior Cleaning: Use compressed air to remove dust from internal components and fans. Ensure the system is powered off and unplugged before cleaning. Avoid using liquid cleaners inside the chassis.
- Exterior Cleaning: Wipe the exterior surfaces with a soft, slightly damp cloth. Avoid using harsh chemicals or abrasive materials that could damage the finish.
7. Troubleshooting
This section addresses common issues you might encounter during or after installation.
- System does not power on:
Check all power connections, including the PSU to the wall outlet, the 24-pin ATX power cable and 8-pin CPU power cable from the PSU to the motherboard, and the front panel power switch cable to the motherboard header. Ensure the PSU switch is in the 'ON' position.
- No display output:
Ensure the graphics card is properly seated in its PCIe slot and connected to auxiliary power (if required). Verify the monitor cable is securely connected to the graphics card and the monitor is powered on and set to the correct input.
- Fans are not spinning:
Check all fan connections to the motherboard or any fan controller. Ensure power cables are properly connected to the fans.
- Front USB ports not working:
Verify that the front panel USB cables (USB 3.0 and USB 2.0) are correctly connected to the corresponding USB headers on your motherboard.
8. Technical Specifications
| Feature | Specification |
|---|---|
| Model Name | CI-01B-OP |
| Form Factor | mATX Cube |
| Dimensions (LxWxH) | 15.75 x 18.11 x 12.99 inches (400 x 460 x 330 mm) |
| Item Weight | 11.22 pounds (5.1 kg) |
| Material | Metal (0.6mm thick) |
| Color | Black |
| External Drive Bays | 1x 5.25" |
| Internal Drive Bays | 2x 3.5", 3x 2.5" |
| Front I/O Ports | 2x USB 3.0, 1x USB 2.0, Mic-in, Audio-out |
| Motherboard Compatibility | Micro ATX |
| Max VGA Card Length | 320mm |
| Max CPU Cooler Height | 150mm |
| Power Supply Mounting | Rear Mount |
| Cooling Method | Air |
9. Warranty and Support
For detailed warranty information, technical support, or service inquiries, please refer to the official Chieftec website or contact your local retailer where the product was purchased. Please retain your proof of purchase for any warranty claims.
Official Chieftec Website: https://www.chieftec.eu





