From MikroTik Wiki
What is User Manager
User manager is a management system that can be used for:
It is a separate package for RouterOS.
User Manager is a RADIUS server application.
- You should have the same version for RouterOS and the User Manager package.
- The MikroTik User Manager works on MIPSLE, MIPSBE, TILE, PPC, ARM, x86 and MMIPS processor based routers and CHR devices
- The router should have at least 32MB RAM and 2MB free HDD space.
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