SilverStone CPF04 1-to-8 PWM fan hub
A cheap, dependable way to run up to eight PWM fans from one header.
The short version
- Builders with more case fans than motherboard fan headers
- Anyone wanting several PWM fans to follow one temperature curve
- You need fans to run at different speeds or report their own RPM
- Your fans are 3-pin and you want them to slow down
- Your motherboard has no PWM fan control, since the hub cannot set speeds on its own
What owners like
- Eight identical fans held matching speeds across duty cycles in EnosTech's test
- Takes load off the motherboard fan header
- Simple install with a SATA plug and the fan leads
Common complaints
- Only one fan's speed shows up in the BIOS or monitoring software
- 3-pin and 2-pin fans cannot be slowed and run at full speed
- No magnets, so mounting relies on adhesive or a cable tie
- Some buyers expected a fan controller; it only relays the motherboard's PWM signal
Based on EnosTech and MyRandomTechBlog reviews, a Tom's Hardware forum thread, and the Newegg listing specs.
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A small SATA powered hub that lets one motherboard PWM fan header run up to eight fans at the same speed.
- Takes fan power from the PSU over SATA, so the motherboard header only carries the control signal
- Built-in capacitor smooths the power going to the fans
- Four headers on each side, eight total
- Long PWM lead reaches motherboard headers in large tower cases
A good fit for builds with more fans than fan headers, since it draws fan power from the power supply and keeps all the fans in step with one motherboard header. The trade-offs are that every fan runs at the same speed, only one fan reports its RPM, and 3-pin fans run at full speed rather than slowing down.
How it compares
Specs
- Fan outputs
- 8 x 4-pin PWM headers, accept 3-pin fans
- Input
- 1 x 4-pin PWM cable to the motherboard
- Power
- SATA power from the PSU
- Filtering
- 2200 µF capacitor
- Speed reporting
- One marked header reports RPM to the motherboard
- Size
- 54 x 19 x 40 mm
- Cable lengths
- 500 mm PWM cable, 300 mm SATA power cable
- Color
- Black
Worth knowing
- Plug the hub's PWM lead into a motherboard header set to PWM control, or the fans will not change speed
Questions
Is the SilverStone CPF04 a fan controller?
No. It is a hub that passes the motherboard's PWM signal to up to eight fans. Speed still has to come from a PWM header on the board.
Can it control 3-pin fans?
It accepts them, but they run at full speed because the hub controls speed only by PWM.
Which fan does the motherboard see?
Only the fan plugged into the one marked header that passes the RPM signal back.
Does it need power from the PSU?
Yes. It takes power through a SATA connector.
Sources
- Newegg: SilverStone PWM fan hub system cables, black (CPF04)
- EnosTech: SilverStoneTek 1-to-8 PWM fan hub SST-CPF04 review
- MyRandomTechBlog: SilverStone PWM fan hub review
- Tom's Hardware forum: Silverstone fan hub not lowering or detecting speed of CPU fan
Researched 2026-10-01. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
