You connected the pump to a computer with the USB cable to charge it and a connection could not be made.

1. Tap OK and disconnect and reconnect the USB cable to try again.

We recommend using the Tandem USB Cable when charging and uploading.

2. If the Alert recurs, try leaving the pump plugged in for a couple of minutes.

3. Try using a different USB Port, restarting the computer, or trying a different computer.

This alert can be caused by connecting to a computer with an unsupported operating system.