You are probably already familiar with the Corsair Link functionality in Corsair "i" series of PSUs as well as their self contained watercoolers which allows intelligent fan control from a software control panel.  Corsair Commander is an expansion of that tool, allowing control of fans and LEDs in addition to your PSU and CPU cooler, as long as they bear the Corsair Link Digital decal.  For $60 you can think of it as a powerful, if specialized, fan controller with a few other tricks up its sleeve.

FREMONT, California —August 19, 2014 — Corsair, a worldwide leader in high-performance PC hardware components, today announced the availability of the Corsair Commander Mini control unit. The compact Commander Mini gives users the ability to connect and control multiple lights, fans, and other Corsair devices with an intuitive software interface.

Corsair Commander Mini
The Corsair Commander Mini is a centralized control unit for Corsair Link PC control and monitoring system. Equipped with four Corsair Link Digital ports, six fan control connectors, four temperature probe inputs, and a port for connecting Corsair Link LED lighting strips, Corsair Commander Mini lets users take complete control of their PC’s lighting and cooling. The unit is easy to install with an included mounting kit and connects to your PC via a standard SATA connector for power and an included cable to connect it to a USB 2.0 header on the PC’s motherboard.

Corsair Link gives ultimate PC control
Corsair Link marks an end to the days of case fans, component fans and case lighting that must be managed manually with hardware switches and dials, while simultaneously offering more advanced control and expansion options than motherboard BIOS settings. Everything is configurable from the PC’s desktop via the Corsair Link Dashboard software interface.

Precise Monitoring
Users can see how a system is operating at a glance with an unprecedented level of detail. Coolant temperature, ambient temperature (at multiple points), and the speed of case fans and fans built-in to compatible system components can be monitored, all via the Corsair Link Dashboard software.

A New Level of Control
Corsair Link gives PC users the power to manage fan speeds individually, set up customized cooling profiles, or program fans to respond to changes in ambient or component temperature. Lighting can be programmed to relay critical system information or to change the look of the system to provide an instant visual indicator of the selected cooling profile, or just for fun.

Expandable Eco-System
The Commander Mini fan controllers work with virtually any standard PC case fan, and the included temperature sensors can be placed nearly anywhere in a PC case. Expand your control by adding compatible peripherals, including Corsair i-Series liquid CPU coolers, i-Series power supplies, and DRAM cooling systems which feature the Corsair Link Digital logo.