This read-only Unsigned32 value, indexed by raisecomFanSpeedLevelIndex, reports the expected fan speed for a given speed level as measured on a new or otherwise unused fan, since a used fan may run slower due to aging. Admins use it as a baseline reference to judge whether a fan's actual reported speed (raisecomFanSpeedValue) has degraded from what a healthy fan should produce at that level. For example, level 4's due value might read 4000 while an aged fan at the same level only reports 3400, flagging it for replacement.