Model: ZA-240B
This manual provides detailed instructions for the installation, operation, and maintenance of your JONSBO ZA-240B PC Case Fan. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the product. The JONSBO ZA-240B is an all-in-one unit featuring two 120mm ARGB fans, designed for efficient cooling and customizable lighting within a PC chassis.
Verify that all items are present in the package:

Image: JONSBO ZA-240B fan unit with its integrated cables for power and ARGB connection.

Image: Front view of the JONSBO ZA-240B PC Case Fan showcasing its ARGB lighting and infinity mirror effect.
Follow these steps to install the JONSBO ZA-240B PC Case Fan into your computer chassis:

Image: JONSBO ZA-240B fan unit installed at the top of a PC case, demonstrating typical mounting.
The JONSBO ZA-240B fan unit utilizes Pulse Width Modulation (PWM) technology, allowing your motherboard to dynamically adjust fan speeds based on system temperature. This ensures optimal cooling performance while minimizing noise levels. You can configure fan curves through your motherboard's BIOS/UEFI settings or using compatible software provided by your motherboard manufacturer.
The Addressable RGB (ARGB) lighting of the ZA-240B can be controlled via your motherboard's ARGB software (e.g., ASUS Aura Sync, MSI Mystic Light Sync, GIGABYTE RGB Fusion, ASRock Polychrome Sync). Ensure your motherboard supports 3-pin 5V ARGB headers. This software allows you to customize lighting effects, colors, and synchronization with other ARGB components in your system.

Image: The JONSBO ZA-240B fan unit displaying its customizable ARGB lighting within a computer system.
Regular maintenance helps ensure optimal performance and extends the lifespan of your fan unit.
| Issue | Possible Cause | Solution |
|---|---|---|
| Fan not spinning | Loose or incorrect PWM cable connection. Insufficient power. | Check the 4-pin PWM cable connection to the motherboard. Ensure the motherboard is supplying power to the fan header. |
| ARGB lighting not working | Loose or incorrect ARGB cable connection. Connected to 12V RGB header. Motherboard ARGB software not configured. | Verify the 3-pin ARGB cable is securely connected to a 5V ARGB header. Ensure it is not connected to a 12V RGB header. Check motherboard ARGB software settings. |
| Fan is too loud | Fan speed set too high. Obstruction. | Adjust fan speed settings in your motherboard's BIOS/UEFI or software. Ensure no cables or objects are obstructing the fan blades. |
| Poor cooling performance | Insufficient airflow. Dust buildup. Incorrect fan orientation. | Ensure proper airflow within the case. Clean dust from fans. Verify fan is oriented to push or pull air in the desired direction. |
| Feature | Detail |
|---|---|
| Model Number | ZA-240B |
| Fan Size | 2 x 120mm (integrated unit) |
| Fan Thickness | 28mm |
| Rotational Speed | 700-2400 RPM (±10%) |
| Noise Level | 21.3-37.3 dB(A) |
| Power Connector | 4-Pin PWM |
| ARGB Connector | 3-Pin 5V ARGB |
| Voltage | DC 12 Volts (Fan), 5 Volts (LED) |
| Wattage | 5.16 watts (Fan), 5.80 watts (LED) |
| Compatible Devices | PC Case |
| Dimensions (Parcel) | 29.97 x 15.75 x 4.19 cm |
| Weight (Parcel) | 707.6 g |
For warranty information and technical support, please refer to the official JONSBO website or contact your retailer. Keep your proof of purchase for warranty claims.
![]() |
Jonsbo Fan Safety Instructions and Warnings This document provides essential safety instructions and warnings for the Jonsbo Fan, covering mechanical safety, electrical safety, ventilation, and maintenance. It is intended for safe handling and proper use of the product. |
![]() |
Jonsbo D31 Computer Case Installation Guide and Specifications Comprehensive guide for the Jonsbo D31 computer case, covering parts list, chassis specifications, PSU and graphics card installation, cooling options, and compatibility. Features detailed steps for building your PC. |
![]() |
JONSBO C6 PC Case: User Manual and Installation Guide Comprehensive user manual and installation guide for the JONSBO C6 PC case. This document details package contents, component identification, and step-by-step assembly instructions for building your PC. |
![]() |
JONSBO NV10 PC Case Installation Guide Comprehensive installation guide for the JONSBO NV10 PC case, detailing package contents, parts, connectors, and step-by-step assembly instructions for building your computer. |
![]() |
JONSBO N5 NAS Case User Guide Comprehensive user guide for the JONSBO N5 NAS Case, detailing product specifications, parts list, and step-by-step installation instructions for components like power supply, motherboard, storage drives, and cooling. |
![]() |
JONSBO T9 Separated Cabinet Case User Guide Comprehensive user guide for the JONSBO T9 Separated Cabinet Case, detailing product specifications, parts list, and step-by-step installation instructions for PC builders. |