Driver API and source code available in liquidctl.driver.corsair_hid_psu.
It is necessary to initialize the device once it has been powered on.
# liquidctl initialize
The +12V rails normally functions in multiple-rail mode, and initialize will by default reset the PSU to that behavior. Single-rail mode can be optionally selected by passing --single-12v-ocp to initialize.
Note: changing the +12V OCP mode is currently an experimental feature.
The PSU is able to report monitoring data about its own hardware and basic electrical variables for the input and output sides.
# liquidctl status
Corsair RM650i
├── Current uptime 3:43:54
├── Total uptime 9 days, 11:43:54
├── Temperature 1 50.0 °C
├── Temperature 2 40.8 °C
├── Fan control mode Hardware
├── Fan speed 0 rpm
├── Input voltage 230.00 V
├── Total power 110.00 W
├── +12V OCP mode Multi rail
├── +12V output voltage 12.12 V
├── +12V output current 7.75 A
├── +12V output power 92.00 W
├── +5V output voltage 4.97 V
├── +5V output current 2.88 A
├── +5V output power 14.00 W
├── +3.3V output voltage 3.33 V
├── +3.3V output current 1.56 A
└── +3.3V output power 5.00 W
The fan speed is normally controlled automatically by the PSU. It is possible to override this and set the fan to a fixed duty value using the fan channel.
# liquidctl set fan speed 90
This changes the fan control mode to software control and sets the minimum allowed duty value to 30%. To revert back to hardware control, re-initialize the device.