1. A high-speed internet connection of at least 30Kbps upload speed per connected device.
2. A computer with Windows 7,8 or 10 or Mac OSX, Google Chrome, Mozilla Firefox or Apple Safari browser
3. For computers, a USB Headset with noise-canceling microphone or earbuds with microphone. The built-in microphone on a notebook computer will not work reliably.  
4. iPad and Android tablets and phones are supported in our current product offering (Carnegie ESL and Carnegie ESP).  Earbuds are strongly recommended to be used with these devices.

Related Article https://k12support.carnegiespeech.com/kb/article/133-what-are-the-technical-requirements-for-carnegie-speech-software/