Turntable to Audacity only recording one channel

I have one of these turntables where you can plug in the USB cable and take songs from the table to the computer. I am trying to create an audacity file of this music. I have only been able to receive one side of the music. It is a stereo recording and I don’t know how to pick up both sides of the music using audacity. Thank you.

You may have to tell Windows to set the USB turntable to stereo recording. See the green panel in this FAQ: http://manual.audacityteam.org/man/faq_recording_how_to_s.html#rinstereo. It applies to Windows 10 too.