usb to fan adapter cable is suitable for all 4-pin and 3-pin case fans.
Use the usb power connector to run 2 pcs PC case fans at 5V voltage at the same time. Note: It has no PWM speed measurement function.
Connector A: USB Male, B: 3x fan connectors (Actually only 2 pins are energized).
Molded plastic rocker switches can quickly and comfortably turn your fan on or off.
Fan must have a start voltage at or below 5V (fans with a higher start voltage will NOT work)
Description
Product Name: USB to 3-pin / 4-pin fan power adapter cable with on/off switch.
Function: change the 5V USB port to small 3 pin / 4 pin port for electricity use.
Connector: 1 is USB port, another 2 is small 3 pin / 4 pin case fan power adapter cable port.
Cable Length: 40CM/15.7inch.
Cable Type: 22AWG.
Package Includes: 2pcs USB to 3-Pin / 4-Pin fan power adapter cables with switch.
Notice: 1. Fan must have a start voltage at or below 5V (fans with a higher start voltage will NOT work).
2. that there are only two wires (positive and negative) in this cable, so your system will lose any tachometer (speed sensor) or PWM (speed control) functionality.