1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your darkFlash TH285 ATX Mid-Tower PC Gaming Case. Please read this manual thoroughly before beginning assembly to ensure proper setup and optimal performance.

Image 1.1: Front view of the darkFlash TH285 ATX Mid-Tower PC Gaming Case.
2. Package Contents
Verify that all components are present before proceeding with installation:
- darkFlash TH285 ATX Mid-Tower PC Gaming Case
- 4x darkFlash Air12X 120mm ARGB PWM Fans (pre-installed)
- Accessory Box (screws, cable ties, standoffs, user manual)
3. Specifications
| Feature | Specification |
|---|---|
| Model Name | TH285 |
| Case Type | Mid-Tower |
| Motherboard Support | ATX, M-ATX, ITX |
| Dimensions (L x W x H) | Approximately 20.27 x 17.79 x 14.09 inches |
| Material | Metal, Plastic, Tempered Glass |
| GPU Clearance | Up to 415mm |
| CPU Cooler Height | Up to 160mm |
| Radiator Support | Top: 240/280mm, Side: 280/240mm, Bottom: 360mm |
| Fan Support | Up to 7x 120mm fans (4x 120mm ARGB PWM pre-installed) |
| Drive Bays | 3.5" HDD x2, 2.5" SSD x3 |
| Expansion Slots | 7 |
| I/O Ports | USB 3.0 x1, USB 2.0 x2, HD Audio |

Image 3.1: Diagram illustrating key dimensions and component clearances for the TH285 case.
4. Features Overview
- High Airflow Performance: Designed with multiple intake and exhaust pathways for optimal cooling efficiency.
- Pre-Installed ARGB PWM Fans: Includes four darkFlash Air12X 120mm ARGB PWM fans for effective cooling and customizable lighting.
- Full-View Tempered Glass Design: Front, top, and side panels are constructed from tempered glass to showcase internal components.
- Spacious Compatibility & Dual-Chamber Layout: Supports large GPUs (up to 415mm) and 360mm radiators. The dual-chamber design separates the PSU and cables for improved thermal performance and aesthetics.
- Top I/O for Easy Access: Conveniently located USB ports and audio jacks on the top panel.
- Practical Maintenance: Features removable dust filters and ample cable routing options.
5. Setup and Installation
5.1. Preparing the Case
- Carefully remove the case from its packaging.
- Place the case on a stable, flat surface.
- Remove the tempered glass side panels by unscrewing the thumb screws at the rear and gently pulling them away from the chassis. Set them aside on a soft, protected surface to prevent scratches.

Image 5.1: Illustration of removing the tempered glass side panel.
5.2. Motherboard Installation
- Install the necessary motherboard standoffs into the motherboard tray according to your motherboard's form factor (ATX, M-ATX, ITX).
- Place your motherboard onto the standoffs, aligning the screw holes.
- Secure the motherboard with the provided screws.
5.3. GPU (Graphics Processing Unit) Installation
- Remove the required number of PCI slot covers from the rear of the case.
- Insert your GPU into the appropriate PCIe slot on your motherboard.
- Secure the GPU to the case with screws. The case supports GPUs up to 415mm in length.

Image 5.2: Rear view showing the 7 PCI expansion slots for GPU and other expansion cards.
5.4. Storage Drive Installation
The TH285 supports 2x 3.5" HDDs and 3x 2.5" SSDs.
- Locate the drive bays in the dual-chamber area of the case.
- For 2.5" SSDs: Mount the SSDs to the designated brackets using the provided screws.
- For 3.5" HDDs: Slide the HDDs into the drive cages and secure them with screws.

Image 5.3: Internal view highlighting the locations for 2.5" SSDs and 3.5" HDDs.
5.5. Power Supply Unit (PSU) Installation
- Position the PSU in its dedicated compartment at the rear of the case.
- Secure the PSU with screws from the exterior rear of the case.
5.6. Fan and Radiator Installation
The case comes with 4x 120mm ARGB PWM fans pre-installed. Additional fans or radiators can be installed as follows:
- Top: Supports up to 2x 140mm or 2x 120mm fans, or a 240/280mm radiator.
- Side: Supports up to 2x 140mm or 3x 120mm fans, or a 280/360mm radiator.
- Bottom: Supports up to 3x 120mm fans, or a 360mm radiator.

Image 5.4: Diagram illustrating radiator and fan placement options.
5.7. Cable Management
Utilize the cable routing cutouts and tie-down points in the dual-chamber area to organize cables. This improves airflow and maintains a clean interior aesthetic.
5.8. I/O Panel Connections
Connect the front panel cables (USB 3.0, USB 2.0, HD Audio, Power, Reset, LED) to the corresponding headers on your motherboard. Refer to your motherboard manual for specific header locations.

Image 5.5: Close-up of the top-mounted I/O panel featuring USB 3.0 and audio ports.
6. Operating the Case
6.1. Powering On
Once all components are installed and connected, press the power button on the top I/O panel to start your system.
6.2. ARGB Fan Control
The pre-installed ARGB PWM fans can be controlled via your motherboard's software if it supports Addressable RGB (ARGB) and PWM fan control. Connect the ARGB cables to the appropriate 3-pin 5V ARGB header and the PWM fan cables to 4-pin fan headers on your motherboard.
7. Maintenance
7.1. Cleaning Dust Filters
The TH285 case includes removable dust filters to prevent dust buildup. Regularly clean these filters by gently removing them and washing them with water or brushing off accumulated dust. Ensure they are completely dry before re-installing.
7.2. General Cleaning
Use a soft, dry cloth to wipe down the exterior of the case, including the tempered glass panels. For stubborn smudges on glass, a mild glass cleaner can be applied to the cloth (not directly to the glass) and then wiped clean.
8. Troubleshooting
- System does not power on: Ensure all power cables (24-pin ATX, 8-pin CPU, GPU power) are securely connected. Verify the PSU switch is in the 'ON' position. Check front panel power button connection to the motherboard.
- Fans are not spinning or ARGB lighting is not working: Confirm fan PWM and ARGB cables are correctly connected to the motherboard headers. Check motherboard software for fan speed and lighting control settings.
- No display output: Ensure the GPU is properly seated in its PCIe slot and connected to power. Verify the monitor cable is connected to the GPU, not the motherboard integrated graphics (unless using integrated graphics).
9. Warranty and Support
For warranty information and technical support, please refer to the darkFlash official website or contact your local retailer. Keep your proof of purchase for warranty claims.