Specification: _x005f_x000D_ Certification: CE _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: PWM Controller/HUB _x005f_x000D_ Product type: PWM controller/hub _x005f_x000D_ Fan interface: 4 Pin (PWM) _x005f_x000D_ Number of interfaces: 5+5 PWM interfaces (4PIN) _x005f_x000D_ Control mode: PWM intelligent temperature control _x005f_x000D_ Power supply interface: SATA power interface _x005f_x000D_ Motherboard cable: about 40CM _x005f_x000D_ Product size: 70.00x45.00x7.00mm/2.76x1.77x0.28inch _x005f_x000D_ Product weight:  _x005f_x000D_ Why is there only two wires connected to the motherboard? _x005f_x000D_ The power supply and ground wires of the fan are taken over from the SATA interface on the power supply, and the single-interface power supply limit of the motherboard is lifted (generally, the single FAN interface of the motherboard only supports current access of about 1A), and the two pins connected to the motherboard are speed control and temperature detection lines. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 X Hub _x005f_x000D_ 1 X Cable