This reports the maximum number of locally-retained RMON files this specific device or platform supports, and per its own description, older LEOS 4.x software and the 3902, 3911, and 3920 hardware models are limited to just 1. Because this is read-only and platform-determined rather than admin-configurable, it acts as a hard ceiling on the user-files-kept object; an admin planning local RMON retention capacity across a mixed fleet needs to check this per device rather than assuming every switch supports the same retention depth. For example, a network with a mix of newer platforms and legacy 3902 units would find this object reads 4 on the newer switches but only 1 on the 3902s.