Once the software is opened on the PC, click device at the top of the screen. Make sure you select "ESC Speed Controller", otherwise it won't read the ESC settings. Additionally, make sure that you connect the port that powers the fan to the 2 in 1 box, not the signal cable connected to the ESC that goes to the receiver. If you bought the ESC new, it should have been shipped with a servo extension cable - use that to connect the ESC to the 2 in 1 box.