I had finished adding a water temp sensor to my cooling loop and have it connected to the 'Opt Temp Sensor 2' Header on the motherboard. 
I have that sensor enabled in the bios and it is showing the correct temp. It also shows up in PC Probe II in Windows. However, I am unable to 
find that label in the sensor items list for my Logitech G19 Keyboard. There are no 'Opt Temp' sensors listed anywhere. 
Am I missing something or is this sensor not able to be monitored. I'm currently running V2.20. 
Thanks.