Danrbball

Just received the SDR kit from the Hakshop and had two questions: 1.) The RTL unit when plugged into the USB drive is EXTREMELY hot. Is this normal for this hardware? 2.) The device is not recognized in a full install of kali (tried lsusb command to verify). Kali's full install appears to have the sdr drivers installed. Is there something else that must be done for the device to be recognized?