Product Overview
The ID-COOLING IS-40-XT Black is a compact, low-profile CPU cooler designed for systems with limited space, such as HTPCs, ITX, and Small Form Factor (SFF) builds. It features four direct-contact heat pipes and a 92mm PWM fan to ensure efficient heat dissipation from your CPU while maintaining a quiet operation. Its ultra-compact design, with a total height of only 47mm, ensures excellent compatibility with various motherboards and RAM configurations.

Figure 1: The ID-COOLING IS-40-XT Black Low Profile CPU Cooler, showcasing its compact design and all-black aesthetic.
Setup and Installation
The IS-40-XT CPU cooler is designed for easy installation with its upgraded mounting kits and backplate. It supports a wide range of Intel and AMD sockets, including Intel LGA1700/1200/1151/1150/1155/1156 and AMD AM5/AM4.
Package Contents:
- Heatsink
- Cooling Fan (92mm PWM)
- Mounting Hardware (for Intel and AMD sockets)
- Thermal Paste

Figure 2: Included mounting hardware for various Intel and AMD CPU sockets, ensuring broad compatibility.
General Installation Steps:
- Prepare Motherboard: Ensure your motherboard is removed from the PC case or has sufficient access to the CPU socket area.
- Install Backplate: Depending on your CPU socket (Intel or AMD), attach the appropriate backplate to the rear of the motherboard.
- Attach Mounting Brackets: Secure the correct mounting brackets to the front side of the motherboard around the CPU socket.
- Apply Thermal Paste: Apply a small amount of thermal paste (included) to the center of the CPU's integrated heat spreader (IHS).
- Mount Cooler: Carefully place the IS-40-XT cooler onto the CPU, aligning the mounting holes with the brackets. Secure the cooler using the provided screws, tightening them in a diagonal pattern until snug.
- Connect Fan Cable: Connect the 4-pin PWM fan cable to the CPU_FAN header on your motherboard.
For detailed, socket-specific instructions, please refer to the diagrams provided in the physical manual or on the manufacturer's website.

Figure 3: The low-profile design ensures 100% RAM clearance, preventing interference with memory modules, even on Mini-ITX motherboards.
Operating Principles
The ID-COOLING IS-40-XT utilizes a combination of direct-contact heat pipes and a PWM fan to efficiently transfer and dissipate heat from your CPU. The four direct-contact heat pipes draw heat directly from the CPU's surface, transferring it to the aluminum fin array. The 92mm PWM fan then pushes air through these fins, expelling the heat away from the CPU.

Figure 4: Illustration of the four direct-contact heat pipes, demonstrating their role in efficient heat transfer from the CPU.
PWM Fan Control:
The 92mm fan features Pulse Width Modulation (PWM) control, allowing your motherboard to automatically adjust the fan speed based on CPU temperature. This ensures optimal cooling performance when needed and quiet operation during lighter loads. The fan operates within a speed range of 800±200 to 2800RPM±10% (PWM), providing a maximum airflow of 46 CFM.

Figure 5: Close-up view of the hydraulic bearing, which contributes to the fan's quiet operation and extended lifespan of 50,000 hours.
Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your CPU cooler.
- Dust Removal: Periodically (e.g., every 3-6 months), use compressed air to gently blow dust out of the heatsink fins and fan blades. Ensure the fan is not spinning rapidly during this process to prevent damage to the bearing.
- Fan Inspection: Check the fan for any obstructions or signs of wear. Ensure the fan blades are clean and free from debris.
- Thermal Paste: While not typically required for routine maintenance, if you remove the cooler for any reason, it is recommended to clean off the old thermal paste from both the CPU and the cooler's base and apply new thermal paste before reinstallation.
- Cable Management: Ensure the fan cable is not interfering with other components or fan blades.
Troubleshooting
If you encounter issues with your ID-COOLING IS-40-XT cooler, consider the following:
- High CPU Temperatures:
- Verify the cooler is securely mounted and making proper contact with the CPU.
- Check if thermal paste was applied correctly and sufficiently.
- Ensure the fan is spinning. If not, check the fan cable connection to the motherboard's CPU_FAN header.
- Confirm that your motherboard's BIOS/UEFI settings are configured for proper fan control (PWM mode).
- Check for adequate airflow within your PC case.
- Excessive Fan Noise:
- Inspect the fan for any obstructions (e.g., cables, dust buildup) that might be causing noise.
- Ensure the fan is securely attached to the heatsink.
- Check your motherboard's fan control settings; you might be able to adjust the fan curve to reduce noise at lower temperatures.
- Fan Not Spinning:
- Ensure the 4-pin fan connector is fully seated in the CPU_FAN header on the motherboard.
- Check BIOS/UEFI settings to ensure the CPU_FAN header is enabled and configured correctly.
- Test the fan on another fan header if available, or with a fan tester, to rule out a faulty fan.
If problems persist, contact ID-COOLING customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model | IS-40-XT Black |
| Product Dimensions (L x W x H) | 3.62" x 0.59" x 3.62" (Fan) / 92 x 92 x 15mm (Fan) |
| Total Height | 47mm |
| Weight | 1.12 Pounds |
| Heat Pipes | 4 Direct-Contact |
| Fan Size | 92mm x 92mm x 15mm (Slim) |
| Fan Speed | 800±200 - 2800RPM±10% (PWM) |
| Max. Air Flow | 46 CFM |
| Noise Level | 35.2 dB (Max) |
| Power Connector | 4-Pin PWM |
| Voltage | 12 Volts (DC) |
| Wattage (TDP) | Up to 95 watts |
| Cooling Method | Air Cooling |
| Compatible Devices | Desktop PCs |
| Socket Compatibility | Intel LGA1700/1200/1151/1150/1155/1156, AMD AM5/AM4 |
| Fan Bearing Type | Hydraulic Bearing |
| Fan Lifespan | 50,000 hours |
Warranty and Support
ID-COOLING products are manufactured to high quality standards. For warranty information and technical support, please refer to the warranty card included with your product or visit the official ID-COOLING website. Keep your proof of purchase for warranty claims.
For returns, please adhere to the retailer's return policy, which typically allows for returns within 30 days of purchase if the product is in its original condition.
Official Website: While a direct link is not provided here, you can typically find support and contact information by searching for "ID-COOLING Official Website" online.

