The voltage regulator is a KA7805 3 terminal 1 amp positive voltage regulator. These are mainly designed for fixed voltage output, but obviously has been configured for variable output. The regulators are equipped with thermal overload and short circuit protection, guarding against incorrect wiring or excessive loads.
There are two types of 3-pin connectors for the variable output channels, with the difference conveniently color coded. The blue type is a straight-through connector, while the white connector incorporates a fan-monitoring lead. The motherboard’s fan connectors can continue to monitor system fan RPMs while still being controlled by the fanbus.
This is a welcome feature, as many motherboards will either not boot or shriek like a banshee if a CPU fan is not detected. The cables reach as far as 15 inches, which should be enough for most cases, but some larger cases (like the Chenming) may have to compromise the drive bay position to fully reach all system fans.
Once installed, I was able to look at the controller in its full glory. I noticed that several of the blue LEDs differed in color slightly. Some blue LEDs are a pure blue, and others are turquoise. This difference is hard to see in the photos, as the camera exposure necessary to take the picture makes the leds appear white. Your mileage may vary, but my unit has very different LEDs installed.
Both LEDs over the switches are dual color, and give the same pure color in both red and blue modes. The rheostat LEDs also flickers when using a low RPM fan on a low setting. I’m not sure if this is a bug or a feature; indicating that a fan is about to stall, or a side-affect of the circuitry. The rheostat heatsinks can get very hot, as I recorded an average 125°F! These heatsinks could probably stand to be a little larger, but they seem to do their job.
Conclusion
Zalman has an excellent product track record, and the ZM-MFC1 continues the trend. The unit is compact and easy to install. The included drill template allows customization for a user’s unique setup. The included extension cables are easy to use and offer flexible installation.
This product receives a recommended 9 out of 10, ideal for users seeking a dual-function fan controller with a unique look. Very much thanks to Sharka Corporation for sending this product to review.
Pros
- Compact
- Easy installation
- Professional touches (Al knobs, twisted wiring)
- Drilling template
- Rheobus and baybus features
Cons
- Low power rating on rheobus
- LEDs can flicker at low settings
