Fan Y-splitter Cable Watercool 4-fan PWM, 30 cm, black

Watercool Y-splitter Cable Watercool 4-fan PWM, 30 cm, black is a compact cable adapter designed to connect up to four PWM fans to a single motherboard or fan controller header. The 30 cm length and black finish allow discreet routing inside PC cases and enclosures while providing a single consolidated connection for power and PWM speed signal. This cable is intended for systems where multiple case or radiator fans need to be managed together for synchronized speed control and simplified cable management.

Advantages

The Y-splitter supports four PWM fans with a single PWM signal line, enabling synchronized fan speed control from one header. Its compact 30 cm length reduces clutter and eases installation in typical desktop and small-form-factor cases. The black sleeving and connector housings offer neutral aesthetics and improved cable routing. By consolidating multiple fan connections, the cable minimizes the number of headers required and simplifies system airflow configuration.

Suitable for

• PC cases with multiple intake or exhaust fans that should run at the same speed
• Radiator fan arrays driven by a single PWM header
• Systems with limited motherboard fan headers
• Builds where tidy cable management and reduced connector clutter are desired

Key specifications

• Connector type: 4 × 4-pin PWM female to 1 × 4-pin PWM male
• Cable length: 30 cm
• Supported fans: up to four PWM-controlled fans
• Color: black

How to use

Connect the single male 4-pin PWM plug to a motherboard or fan controller PWM header. Attach up to four PWM fans to the female 4-pin connectors, ensuring correct orientation of the pins for power and PWM signal. After connection, configure fan curves or PWM control in the motherboard BIOS or fan controller software so all connected fans respond to the same speed signal. Verify that the combined current draw of the connected fans does not exceed the header or controller specifications.

Usage recommendations

For reliable operation, use the Y-splitter with fans whose combined current draw stays within the PWM header or controller limits. Avoid connecting high-current fans in groups that exceed the header rating; if necessary, use a powered fan hub or separate power source while retaining the PWM signal for speed control. Route the cable to minimize airflow obstruction and secure connectors to prevent accidental disconnection during maintenance.