System requirements

Operating system Microsoft® Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
Processor 1GHz Intel/AMD processor or above
RAM 512MB RAM (1024MB or above recommended)
Others Internet Connection; Computer Authorization; QuickTime Installation for 32-bit Computer without Discrete Graphics; 64-bit Computer in Conversion of Video/Music/Audiobook

References

Input
eBook epub, mobi, azw3, azw, kfx, prc, html, txt
Output Formats
eBook epub, mobi, azw3, txt
Output Player Supported
player devices Kindle e-ink Readers, Kobo, Zune, Creative Zen, Sony, Samsung, car radio system, and other common MP3 players

CPU and Storage Occupations

CPU and Internal Storage Occupations
CPU 0% in standby, 20.6% in file loading, 29.4% in file converting
Internal Storage 32.4M in standby, 66.2M in file loading and converting

System requirements

Operating system macOS Yosemite (10.10), macOS X El Capitan (10.11), macOS Sierra (10.12), macOS High Sierra (10.13), macOS Majave (10.14), macOS Catalina (10.15), macOS Big Sur (11), macOS Monterey (12), macOS Ventura(13), macOS Sonoma (14).
Note: Kindle eBooks won't convert in macOS 10.15 and later versions
Processor 2.0GHz Intel Core 2 Duo or above
RAM 2G or above recommended
Others iTunes 12.5 and later; Internet Connection; Computer Authorization;

References

Input
eBook epub, mobi, azw3, azw, kfx, prc, html, txt (Kindle e-books are currently not supported on macOS 10.15 and e-books from Kindle App of desktop version are currently not supported on macOS 11/12/13)
Output Formats
eBook epub, mobi, azw3, txt
Output Player Supported
player devices Kindle e-ink Readers, Kobo, Zune, Creative Zen, Sony, Samsung, car radio system, and other common MP3 players
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