Server and industrial fans have an enormously high power consumption due to their special requirements. For this reason, they can usually only be connected directly to the power supply unit, as the existing connections on the standard mainboards cannot provide the power needed. How does it work? The ES Guardian 4Port Powerfan Hub can be placed anywhere in the case using M3x4mm screws and M3x6mm spacers (see mounting example) and connects directly to the power supply using the included power cable. In case the fans used require more than 1.5A (18W) per fan, an additional power connector is provided. Stand-alone operation The ES Guardian 4Port Powerfan Hub has a 4-way DIP switch. The switch allows to activate or deactivate the monitoring of the fans individually. The speed signal (RPM) is passed from the first active fan to the mainboard via the 4-pin PWM connector. Full control The Powerfan Hub has a speaker port that can be used to connect a piezo buzzer or standard PC speaker. This way, an audible warning signal can also be issued in the event of a fan failure. Control LEDs on the fan connectors also allow visual monitoring. Technical Details: L x W x H: 120 x 38 x 18mm Power supply (connection): 2x 4-pin Molex connection via power supply unit Supply voltage: 12V DC Continuous current: 12A at 12V Maximum current at 12V: 16A Connection options: 4x 4-pin PWM fan | 1x 4-pin PWM mainboard | 2x 4-pin CAN-Bus | 1x speaker Type power supply cable: 4-pin Molex/LuMBERG 1614_20 Length power supply cable: 110mm Type mainboard cable: 4-Pin PWM Length mainboard cable: 400mm Control Monitoring: DIP switch (4-way on/off)