Our products come in two formats i.e. PDF & Practice Test Software. The PDF format is supported by almost every operating system e.g. Windows,Mac,Linux etc. Hence you need not to worry about system requirements. You will need any “free pdf reader” to use our products. However for practice exams software, you’ll a windows machine. It is not supported on Mac, Linux and Server environments. Practice Test Software is 100% compatible with Microsoft windows Vista, windows 7, windows 8 (32/64 Bit) windows10 systems only.