To complete your Carbon installation, you must install the manufacturer provided "adb" drivers for your phone that allow it to connect to your PC.
Asus
Asus Drivers - All Asus Devices
Motorola
Motorola Drivers - All Motorola Phones
Google Nexus
Google Drivers - Nexus S, Nexus 4, Nexus 7, and Nexus 10.
This driver will not work on the Galaxy Nexus (see below).
Installation Video on YouTube
Galaxy Nexus Drivers - Works with both GSM and CDMA (Verizon) Galaxy Nexus.
Samsung
Samsung Drivers - Most Samsung Phones
If the above Samsung Drivers do not work, please try the following:
Go to the Samsung Mobile site
Search for your phone using the search box.
Once you find your phone, click Support in the top right of the phone's product page.
In the list of downloads, download and install the USB Driver.