FSP CMT340
FSP ATX Mid Tower PC Computer Gaming Case (CMT340) User Manual
Model: CMT340
1. Introduction
Welcome to the user manual for the FSP ATX Mid Tower PC Computer Gaming Case, Model CMT340. This manual provides essential information for setting up, operating, and maintaining your new PC case. Please read this manual thoroughly before installation and use to ensure optimal performance and safety.
2. Product Overview
The FSP CMT340 is a mid-tower PC case designed for e-Sports and PC gamers. It features two semi-transparent tinted tempered glass panels, a sleek metal chassis, and an all-black coating for a streamlined look. The case comes equipped with four pre-installed addressable RGB (ARGB) fans for enhanced cooling and aesthetics.
2.1 Key Features
- 2 Tempered glass panels (1x front, 1 x side)
- 4 preinstalled addressable RGB (ARGB) fans (3 x front, 1 x rear)
- Supports motherboard Sync for Asus Aura Sync & MSI Mystic Light motherboards
- Compact design: 14.5” x 8” x 18.25” (17.5” W/O legs)
- Built-in 2 x USB3.0 for high-speed data transfer
2.2 Package Contents
Please verify that all components are present before beginning installation:
- FSP CMT340 Mid Tower PC Case
- Accessory Kit (screws, cable ties, etc.)
- User Manual (this document)
2.3 Product Dimensions

2.4 Component Compatibility
- Motherboard Compatibility: ATX, Micro-ATX, Mini-ITX
- CPU Cooler Height: Maximum 160mm
- GPU Length: Maximum 350mm
- PSU Length: Maximum 170mm ATX
- Storage: 2 x 2.5" SSD Bays, 2 x 3.5" HDD or 2 x 2.5" SSD Bays


3. Setup and Installation
Before starting, ensure you have a clean, static-free workspace. It is recommended to wear an anti-static wrist strap to prevent damage to sensitive components.
3.1 Removing Side Panels
Carefully remove the tempered glass side panels by unscrewing the thumb screws located at the rear of the case. Handle glass panels with care to avoid breakage.

3.2 Motherboard Installation
- Install the I/O shield into the motherboard tray opening.
- Align your motherboard with the pre-installed standoffs.
- Secure the motherboard using the appropriate screws from the accessory kit.
3.3 Power Supply Unit (PSU) Installation
- Slide the PSU into its designated compartment at the bottom rear of the case.
- Secure the PSU with screws from the rear of the case.
3.4 Storage Drive Installation
Install your 2.5" SSDs and/or 3.5" HDDs into the available drive bays. Refer to Figure 2.4.1 for bay locations.
3.5 Graphics Card (GPU) and Expansion Card Installation
- Remove the necessary PCIe slot covers from the rear of the case.
- Insert your graphics card or other expansion cards into the motherboard's PCIe slots.
- Secure the cards with screws.
3.6 Cable Management
Utilize the cable routing cutouts and tie-down points behind the motherboard tray to manage cables. This improves airflow and aesthetics.
3.7 Front Panel Connections
Connect the front panel cables (USB 3.0, audio, power switch, reset switch, HDD LED, power LED, RGB control) to the corresponding headers on your motherboard. Refer to your motherboard manual for specific header locations.

4. Operating Instructions
4.1 Powering On Your System
After all components are securely installed and cables connected, close the side panels. Connect your monitor, keyboard, mouse, and power cable. Press the power button on the top I/O panel to start your system.
4.2 RGB Fan Control
The CMT340 comes with four pre-installed addressable RGB (ARGB) fans. These fans can be controlled in two ways:
- Case RGB Button: Use the dedicated RGB button on the top I/O panel to cycle through various lighting modes and colors.
- Motherboard Sync: If your motherboard supports ARGB sync technologies (e.g., Asus Aura Sync, MSI Mystic Light), connect the case's ARGB cable to your motherboard's 3-pin 5V ARGB header. This allows software control of the fan lighting.

Observe the RGB lighting effects in action:
Video 4.2.1: Demonstration of the FSP CMT340 PC case with its RGB fans illuminated, showcasing various color patterns and the overall aesthetic appeal of the case when powered on. This video highlights the dynamic lighting capabilities of the pre-installed fans.
5. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your PC case and its components.
5.1 Dust Cleaning
- Periodically clean dust filters (if present) and fan blades.
- Use compressed air to remove dust from internal components and vents.
- Ensure the system is powered off and unplugged before cleaning.
5.2 Tempered Glass Care
Clean tempered glass panels with a soft, lint-free cloth and a non-abrasive glass cleaner. Avoid harsh chemicals or abrasive materials that could scratch the glass.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not power on. | Loose power connections, faulty PSU, incorrect front panel wiring. | Check all power cables (24-pin, CPU, GPU) are securely connected. Verify PSU switch is ON. Recheck front panel power switch connection to motherboard. |
| RGB fans are not lighting up. | Incorrect ARGB connection, faulty fan controller, software issue. | Ensure ARGB cables are correctly connected to the case controller or motherboard 3-pin 5V ARGB header. Try cycling modes with the case RGB button. Check motherboard RGB software settings. |
| Poor airflow/high temperatures. | Dust buildup, obstructed fans, poor cable management. | Clean dust filters and fans. Ensure no cables are obstructing airflow. Optimize cable routing. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | CMT340 |
| Case Type | Mid Tower |
| Motherboard Compatibility | ATX, Micro-ATX, Mini-ITX |
| Material | Metal, Tempered Glass |
| Color | Black |
| Pre-installed Fans | 4 x Addressable RGB (ARGB) Fans (3 front, 1 rear) |
| I/O Ports | 2 x USB 3.0, Audio In/Out, RGB Control Button |
| Drive Bays | 2 x 2.5" SSD, 2 x 3.5" HDD (or 2 x 2.5" SSD) |
| Max CPU Cooler Height | 160mm |
| Max GPU Length | 350mm |
| Max PSU Length | 170mm (ATX) |
| Product Dimensions (LxWxH) | 14.5 x 8.1 x 18.5 inches (368 x 206 x 470 mm) |
| Item Weight | 13 pounds (5.9 kg) |
8. Warranty Information
For detailed warranty information regarding your FSP CMT340 PC case, please refer to the warranty card included with your product or visit the official FSP website. Warranty terms and conditions may vary by region.
9. Customer Support
If you encounter any issues or have questions not covered in this manual, please contact FSP customer support. You can find contact information on the official FSP website or through your retailer.
FSP Official Website: www.fsp-group.com
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