1Black sleeved 4 way PWM splitter hub for computer fans 2Designed for the need to control numerous system fans 3Capable of expanding one motherboard PWM fan header to support up to four fans 4Support PWM Function, Speed control, satisfy your control needs 5Compatible with 3-pin / 4-pin Fans Description: This power cable expand one 4-pin PWM interface into 4-pin male to solve the problem that the motherboard is lack of interface or the cable is mess and clutter. Features: Black sleeved 4 way PWM splitter hub for computer fans Designed for the need to control numerous system fans Capable of expanding one motherboard PWM fan header to support up to four fans Support PWM Function, Speed control, satisfy your control needs Compatible with 3-pin / 4-pin FansExpand the 3-pin/4-pin interface of the 4-bit fan, solve the lack of motherboard interface, and concentrate on processing fan wires. The pwm interface is connected to the motherboard cpu fan interface, the first one is the dedicated interface for cpu fan. FAN1/FAN2/FAN3 interface is pwm conventional fan interface. Specifications: Type: 4 Ports Fan HUB Connector A: 1 x 4-pin Female Connector B: 1 x 4-pin Male for CPU fan, 3 x 4-pin Male for case fan Material: PET Color: Black (As Picture show) Product Length: 38cm / 14.96inch Package Weight: 16g Package includes: 1 x 4-Pin Power Cable