1. Introdución
This manual provides instructions for the installation, operation, and maintenance of your JONSBO ZA-240BR (Reverse) PC Case Fan. This unit features two 120mm ARGB fans integrated into a single frame, designed for efficient cooling and aesthetic enhancement of your PC build. The reverse blade design ensures optimal airflow direction for specific case configurations, while the infinity mirror effect provides dynamic lighting.

Image 1.1: JONSBO ZA-240BR (Reverse) PC Case Fan unit.
2. Información de seguridade
- Ensure your computer is powered off and unplugged from the wall outlet before installation or maintenance.
- Manexa os compoñentes con coidado para evitar danos por descargas electrostáticas. Considera o uso dunha pulseira antiestática.
- Do not force connectors. Align pins correctly before plugging in cables.
- Manteña o produto lonxe de líquidos e humidade excesiva.
- Do not attempt to disassemble the fan unit beyond what is instructed in this manual.
3. Contido do paquete
Verifica que todos os elementos estean presentes no teu paquete:
- JONSBO ZA-240BR (Reverse) PC Case Fan Unit
- Parafusos de montaxe

Image 3.1: The JONSBO ZA-240BR fan unit, showing its integrated design and cables.
4. Especificacións
| Característica | Detalle |
|---|---|
| Modelo No. | ZA-240BR (Marcha atrás) |
| Dimensións do produto | 9.53" de longo x 4.84" de ancho x 1.1" de alto (242 mm de longo x 123 mm de ancho x 28 mm de alto) |
| Tamaño do ventilador | 2 x 120 mm |
| Tipo de conector de alimentación | 4-Pin (PWM), 3-Pin (ARGB 5V) |
| Voltage | DC 12 Volts (Fan), LED 5V (ARGB) |
| Wattage | 5.16 watts (Fan), LED 5.80W (ARGB) |
| Nivel de ruído | 21.3-37.3 dB(A) (Regular), 17.3-31.6 dB(A) (Reverse) |
| Velocidade de rotación máxima | 700-1800 rpm (±10%) |
| Material | Aluminio |
| Dispositivos compatibles | Funda para PC |
| Iluminación | Addressable RGB (ARGB) with Infinity Mirror Effect |
5. Configuración
5.1 Instalación
- Prepara o teu PC: Power off your computer and unplug it from the power outlet. Open your PC case to access the fan mounting locations.
- Mount the fan unit: Position the ZA-240BR fan unit in your desired location (e.g., top, front, bottom of the case). Secure it using the provided mounting screws. Ensure the reverse blades are oriented to pull air in or push air out as intended for your case's airflow strategy.
- Conecte os cables: The fan unit features simplified cabling for both PWM (4-pin) and ARGB (3-pin, 5V) connections. Connect the 4-pin PWM cable to an available fan header on your motherboard. Connect the 3-pin ARGB cable to a compatible 5V ARGB header on your motherboard.

Imaxe 5.1: Traseira view of the fan unit showing the integrated cables for simplified connection.
5.2 Diagrama de cableado
The ZA-240BR unit uses a single cable for both fan power/control and ARGB lighting, simplifying cable management. Connect the 4-pin connector to a PWM fan header and the 3-pin 5V ARGB connector to a compatible ARGB header on your motherboard. If your motherboard lacks a 5V ARGB header, an external ARGB controller (not included) will be required for lighting control.

Image 5.2: The fan unit with its integrated cables ready for connection to the motherboard.
5.3 Guía visual
For a visual demonstration of the JONSBO ZA/ZB fan series, including installation and lighting effects, please refer to the official product video below.
Video 5.3: Official JONSBO ZA/ZB fan series overview, demonstrating features and potential installation scenarios.
6. Instrucións de funcionamento
6.1 Control da velocidade do ventilador (PWM)
The 4-pin PWM connector allows your motherboard to dynamically control the fan speed based on system temperature. This ensures optimal cooling performance while minimizing noise. You can configure fan curves through your motherboard's BIOS/UEFI settings or dedicated software provided by your motherboard manufacturer.
6.2 Control de iluminación ARGB
The 3-pin 5V ARGB connector enables synchronization of the fan's lighting effects with your motherboard's ARGB ecosystem. Use your motherboard's RGB software (e.g., ASUS Aura Sync, MSI Mystic Light Sync, GIGABYTE RGB Fusion, ASRock Polychrome Sync) to customize colors, patterns, and brightness of the infinity mirror lighting. Ensure your motherboard's ARGB header supports the number of LEDs in the fan unit (52 lamp beads around the circumference and 18 in the axis).

Image 6.1: The JONSBO ZA-240BR fan showcasincoa súa vibrante iluminación ARGB e o efecto de espello infinito.
7. Mantemento
7.1 Limpeza
Regular cleaning helps maintain optimal performance and extends the lifespan of your fan. Periodically, with the PC powered off and unplugged:
- Use compressed air to remove dust from the fan blades and frame.
- Gently wipe the fan frame and infinity mirror surfaces with a soft, dry, lint-free cloth.
- Avoid using liquid cleaners or abrasive materials, as these can damage the fan or its lighting components.
8 Solución de problemas
8.1 O ventilador non xira
- Comprobe se o cable PWM de 4 pines está conectado correctamente ao conector do ventilador da placa base.
- Verify that the fan header is enabled in your motherboard's BIOS/UEFI settings.
- Proba o ventilador nunha cabeceira de ventilador diferente ou cun ventilador que se saiba que funciona para descartar unha cabeceira defectuosa.
8.2 A iluminación ARGB non funciona ou é incorrecta
- Ensure the 3-pin 5V ARGB cable is correctly connected to a compatible 5V ARGB header on your motherboard. Non o conectes a un conector RGB de 12 V, xa que isto danará os LED.
- Check your motherboard's RGB software to ensure the lighting is enabled and configured correctly.
- Confirm that your motherboard's ARGB header or external controller supports the number of LEDs in the fan unit (52 circumference, 18 axis). Some lower-end controllers may not support this count, leading to partial or no illumination.
- If using an external ARGB controller, ensure it is properly powered and configured.
8.3 Ruído excesivo
- Comprobe se hai algunha obstrución (por exemplo, cables) que toque as as aspas do ventilador.
- Ensure the fan unit is securely mounted and not vibrating against the PC case.
- Adjust the fan speed curve in your motherboard's BIOS/UEFI or software to reduce RPM at lower temperatures.
9. Garantía e soporte
JONSBO products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your product or visit the official JONSBO website. For technical support or further assistance, please contact JONSBO customer service through their official channels.







