Wanted to add one of these to an existing 635 (since my newest motherboard is severely lacking fan connectors). But do I really have to pay five bucks extra for the connection cable & seven more for shipping? For that total, I could buy a basic fanbus.
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.

CF Tech

The benefit of the SCAB is bring able to set the fan speeds and read the RPMs by software--possibly dynamically based on temperature.

If you do not need that ability, then a simple fan bus might be a better choice.