Each evaluation kit allows for complete evaluation and customization and includes drivers, USB and serial cables, and full documentation. The CP2114 has three other kit flavors that come with a specific CODEC or DAC as well. The CP2114-CS42L55EK uses a Cirrus CODEC, the CP2114-WM8523EK uses a Wolfson DAC and the CP2114-PCM1774EK uses a TI CODEC.