Swiftech 8 Way PWM Splitter Molex Version (8W-PWM-SPL)
Product Description & Info
The Molex version is discontinued. See our SATA version
The function of the new Swiftech 8-Way PWM Splitter is to connect up to 8 PWM
devices (fans and/or pumps) to a single PWM fan connector on the motherboard,
thus enabling speed-control of all connected PWM devices concurrently. At this
price level, this is the only device of its kind on the market today.
We generally recommend to use the “CPU_Fan” connector of the motherboard,
because most motherboard manufacturers usually allow a greater range of
adjustments on this particular connector. PWM capable connectors must
necessarily be 4-pin, but not all 4-pin motherboard connectors implement or
enable the PWM signal modulation by default. Please carefully consult your
motherboard documentation in this respect.
Since only one RPM signal can be read by one motherboard connector, only channel
1 of the PWM splitter carries an RPM signal; thus the motherboard will only read
the RPM signal of the PWM device that is connected to channel 1 of the
- The PWM signal cable has 2 wires: 1 for the PWM signal, and 1 for the
- Power to the PWM splitter is supplied by a separate power cabe that must
be connected to the Power supply.
- Junction housing including: (8) Males 4-pin connectors - Channel 1
carries RPM signal
- (1) Female 4-pin mini-connector
- (1) Males Molex 4-pin connector
- Peel-off sticker
- Mounting screws
- RoHS compliant
"All the devices
connected to my splitter work at 100% but I cannot vary their speed"
"The device(s) connected to my
splitter do not work"
- Check that the splitter mini-4 pin PWM signal cable is correctly
connected to the CPU_Fan connector of the motherboard
- Enable "Manual Fan Control" in the motherboard BIOS
"I am getting a "CPU fan error"
when I turn on the computer"
- Check that the splitter power cable is connected to the power supply
- Check that the non-functioning device female 4-pin connector is
correctly inserted in all 4 pins of the splitter connector: in effect,
it may be possible to inadvertantly offset the female connector by one
pin by slghtly forcing its insertion, so be careful about this!
"I connected the PWM splitter to
an auxiliary 4-pin connector that was indicated as PWM capable by my
Motherboard manual, but I can't vary the speed of my devices"
- Make sure that a device is connected to channel 1 of the PWM
splitter. If the motherboard CPU_Fan header does not read an RPM signal,
it will return such error by default.
- Check that the device connected to Channel 1 of the PWM splitter is
correctly inserted in its connector.
- Check that the power cable of the PWM splitter is connected to power
am connecting the splitter to a PWM fan controller instead of the
motherboard, and it doesn't work"
- Other than the CPU_Fan connector which is PWM enabled by default,
most of the motherboards 4-pin connectors feature two methods of speed
adjustment in order to allow control of both types of fans, the 3-pins
which are voltage controlled, and the 4-pins which are PWM controlled.
As a result, the PWM functionality must be enabled in the BIOS before it
can actually work. Please consult your motherboard manual for a "how
- Since the "CPU_Fan" motherboard connector is PWM enabled by default,
we recommend that you connect the splitter to the CPU_Fan connector in
order to ascertain its functionality.
- Not all PWM fan controllers are compatible. Please read this
white paper for further explanations and a list of compatible